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Error: Call to a member function getTranslation() on null in book_tour_form_webform_submission_book_tour_form_alter() (line 87 of modules/custom/book_tour/book_tour.module).
book_tour_form_webform_submission_book_tour_form_alter(Array, Object, 'webform_submission_book_tour_node_27_add_form') (Line: 539) Drupal\Core\Extension\ModuleHandler->alter('form', Array, Object, 'webform_submission_book_tour_node_27_add_form') (Line: 836) Drupal\Core\Form\FormBuilder->prepareForm('webform_submission_book_tour_node_27_add_form', Array, Object) (Line: 279) Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 61) Drupal\Core\Entity\EntityFormBuilder->getForm(Object, 'add') (Line: 1249) Drupal\webform\Entity\Webform->getSubmissionForm(Array) (Line: 79) Drupal\webform\Element\Webform::preRenderWebformElement(Array) call_user_func_array(Array, Array) (Line: 100) 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. Support for this callback implementation is deprecated in 8.8.0 and will be removed in Drupal 9.0.0. See https://www.drupal.org/node/2966725', 'silenced_deprecation', 'Drupal\Core\Render\Element\RenderCallbackInterface') (Line: 781) Drupal\Core\Render\Renderer->doCallback('#pre_render', Array, Array) (Line: 372) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 200) Drupal\Core\Render\Renderer->render(Array) (Line: 501) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 80) __TwigTemplate_337f6c060be1b582f315dbd92b1ed922b941e79e14b9bdfd6a432d98e51090ea->doDisplay(Array, Array) (Line: 453) Twig\Template->displayWithErrorHandling(Array, Array) (Line: 420) Twig\Template->display(Array) (Line: 432) Twig\Template->render(Array) (Line: 64) twig_render_template('themes/custom/rmc/templates/field/field.html.twig', Array) (Line: 384) Drupal\Core\Theme\ThemeManager->render('field', Array) (Line: 431) Drupal\Core\Render\Renderer->doRender(Array) (Line: 444) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 200) Drupal\Core\Render\Renderer->render(Array) (Line: 501) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 102) __TwigTemplate_333f447d3ccc5a68fc0c0645550e7805f680fd887491eb36767aeaea29347e1d->doDisplay(Array, Array) (Line: 453) Twig\Template->displayWithErrorHandling(Array, Array) (Line: 420) Twig\Template->display(Array) (Line: 432) Twig\Template->render(Array) (Line: 64) twig_render_template('themes/custom/rmc/templates/node/node.html.twig', Array) (Line: 384) Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 431) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 200) Drupal\Core\Render\Renderer->render(Array, ) (Line: 226) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 573) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 227) Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 117) 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('kernel.view', Object) (Line: 156) Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 68) Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 57) Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 47) 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: 47) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 52) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23) Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708) Drupal\Core\DrupalKernel->handle(Object) (Line: 19)