Error message

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__field_author', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__field_author', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__field_author', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__field_author', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__field_author', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__field_author', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__field_author', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__field_author', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__title_1', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__title_1', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__title_1', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__title_1', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__title_1', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__title_1', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field__taxonomy_term__page__title_1', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field__taxonomy_term__page__title_1', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 658 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view_field() (line 666 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view_field(Array, 'views_view_field', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view_field', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view_field', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 1790)
  Drupal\views\Plugin\views\field\FieldPluginBase->theme(Object) (Line: 765)
  Drupal\views\Plugin\views\style\StylePluginBase->elementPreRenderRow(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array) (Line: 704)
  Drupal\views\Plugin\views\style\StylePluginBase->renderFields(Array) (Line: 570)
  Drupal\views\Plugin\views\style\StylePluginBase->renderGrouping(Array, Array, 1) (Line: 458)
  Drupal\views\Plugin\views\style\StylePluginBase->render(Array) (Line: 2174)
  Drupal\views\Plugin\views\display\DisplayPluginBase->render() (Line: 1548)
  Drupal\views\ViewExecutable->render() (Line: 199)
  Drupal\views\Plugin\views\display\Page->execute() (Line: 1645)
  Drupal\views\ViewExecutable->executeDisplay('page', Array) (Line: 81)
  Drupal\views\Element\View::preRenderViewElement(Array)
  call_user_func_array(Array, Array) (Line: 111)
  Drupal\Core\Render\Renderer->doTrustedCallback(Array, Array, 'Render #pre_render callbacks must be methods of a class that implements \Drupal\Core\Security\TrustedCallbackInterface or be an anonymous function. The callback was %s. See https://www.drupal.org/node/2966725', 'exception', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 858)
  Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 421)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Undefined array key 0 in wltbootstrap_preprocess_views_view() (line 582 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view(Array, 'views_view__taxonomy_term__page', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view__taxonomy_term__page', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array) (Line: 493)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: Trying to access array offset on value of type null in wltbootstrap_preprocess_views_view() (line 582 of sites/worldliteraturetoday.org/themes/custom/wltbootstrap/wltbootstrap.theme).

  wltbootstrap_preprocess_views_view(Array, 'views_view__taxonomy_term__page', Array)
  call_user_func_array('wltbootstrap_preprocess_views_view', Array) (Line: 261)
  Drupal\Core\Theme\ThemeManager->render('views_view__taxonomy_term__page', Array) (Line: 480)
  Drupal\Core\Render\Renderer->doRender(Array) (Line: 493)
  Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 240)
  Drupal\Core\Render\Renderer->render(Array, ) (Line: 238)
  Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 627)
  Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 231)
  Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 128)
  Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90)
  Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object)
  call_user_func(Array, Object, 'kernel.view', Object) (Line: 111)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 186)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 76)
  Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
  Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 28)
  Drupal\Core\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 32)
  Drupal\big_pipe\StackMiddleware\ContentLength->handle(Object, 1, 1) (Line: 191)
  Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
  Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
  Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
  Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 36)
  Drupal\Core\StackMiddleware\AjaxPageState->handle(Object, 1, 1) (Line: 51)
  Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)