Error: Call to a member function getEntity() on null in Drupal\layout_paragraphs\Form\EditComponentForm->buildForm() (line 31 of /var/www/html/web/modules/contrib/layout_paragraphs/src/Form/EditComponentForm.php).

Problem/Motivation

Backtrace	
#0 /var/www/html/web/modules/contrib/mercury_editor/src/Form/EditComponentForm.php(77): Drupal\layout_paragraphs\Form\EditComponentForm->buildForm()
#1 [internal function]: Drupal\mercury_editor\Form\EditComponentForm->buildForm()
#2 /var/www/html/web/core/lib/Drupal/Core/Form/FormBuilder.php(554): call_user_func_array()
#3 /var/www/html/web/core/lib/Drupal/Core/Form/FormBuilder.php(303): Drupal\Core\Form\FormBuilder->retrieveForm()
#4 /var/www/html/web/core/lib/Drupal/Core/Form/FormBuilder.php(243): Drupal\Core\Form\FormBuilder->buildForm()
#5 /var/www/html/web/modules/contrib/mercury_editor/src/Controller/MercuryEditorActionController.php(92): Drupal\Core\Form\FormBuilder->getForm()
#6 [internal function]: Drupal\mercury_editor\Controller\MercuryEditorActionController->run()
#7 /var/www/html/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(123): call_user_func_array()
#8 /var/www/html/web/core/lib/Drupal/Core/Render/Renderer.php(634): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#9 [internal function]: Drupal\Core\Render\Renderer::Drupal\Core\Render\{closure}()
#10 /var/www/html/web/core/lib/Drupal/Core/Render/Renderer.php(635): Fiber->start()
#11 /var/www/html/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(121): Drupal\Core\Render\Renderer->executeInRenderContext()
#12 /var/www/html/web/core/lib/Drupal/Core/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php(97): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext()
#13 /var/www/html/vendor/symfony/http-kernel/HttpKernel.php(183): Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}()
#14 /var/www/html/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#15 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/Session.php(53): Symfony\Component\HttpKernel\HttpKernel->handle()
#16 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle()
#17 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#18 /var/www/html/web/core/modules/big_pipe/src/StackMiddleware/ContentLength.php(32): Drupal\Core\StackMiddleware\ContentLength->handle()
#19 /var/www/html/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(118): Drupal\big_pipe\StackMiddleware\ContentLength->handle()
#20 /var/www/html/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(92): Drupal\page_cache\StackMiddleware\PageCache->pass()
#21 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle()
#22 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#23 /var/www/html/web/modules/contrib/mercury_editor/src/StackMiddleware/AjaxPageState.php(38): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#24 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(53): Drupal\mercury_editor\StackMiddleware\AjaxPageState->handle()
#25 /var/www/html/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(54): Drupal\Core\StackMiddleware\AjaxPageState->handle()
#26 /var/www/html/web/core/lib/Drupal/Core/DrupalKernel.php(745): Drupal\Core\StackMiddleware\StackedHttpKernel->handle()
#27 /var/www/html/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#28 {main}

Steps to reproduce

Edit an page, try to add a block and save.

Proposed resolution

Catch them early.

Remaining tasks

MR

User interface changes

API changes

Data model changes