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Error: Call to a member function getFieldDefinitions() on null in Drupal\xi_seo_schema_faq\Plugin\metatag\Tag\SchemaQAPageMainEntity::findAccordionParagraphs() (line 45 of modules/contrib/xi_seo_schema_faq/src/Plugin/metatag/Tag/SchemaQAPageMainEntity.php).
Drupal\xi_seo_schema_faq\Plugin\metatag\Tag\SchemaQAPageMainEntity::findAccordionParagraphs(Object, Array) (Line: 70) Drupal\xi_seo_schema_faq\Plugin\metatag\Tag\SchemaQAPageMainEntity::getItems('1') (Line: 38) Drupal\xi_seo_schema_faq\Plugin\metatag\Tag\SchemaQAPageMainEntity->outputValue('1') (Line: 179) Drupal\schema_metatag\Plugin\metatag\Tag\SchemaNameBase->output() (Line: 634) Drupal\metatag\MetatagManager->generateRawElements(Array, Object) (Line: 564) Drupal\metatag\MetatagManager->generateElements(Array, Object) (Line: 504) metatag_get_tags_from_route() (Line: 258) _metatag_remove_duplicate_entity_tags(Array) (Line: 218) metatag_entity_view_alter(Array, Object, Object) (Line: 545) Drupal\Core\Extension\ModuleHandler->alter('node_view', Array, Object, Object) (Line: 304) Drupal\Core\Entity\EntityViewBuilder->buildMultiple(Array) (Line: 238) Drupal\Core\Entity\EntityViewBuilder->build(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: 797) Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 386) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204) Drupal\Core\Render\Renderer->render(Array, ) (Line: 238) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 592) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 239) 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: 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: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle(Object, 1, 1) (Line: 704) Drupal\Core\DrupalKernel->handle(Object) (Line: 19)