Fatal error on Manage Display page for non-Canvas view modes in Drupal 11.3.3

FWIW This is an old site originally built in Drupal 8 and maintained on a regular basis. We are currently in the process of updating to use Drupal Canvas and a new theme.

#0 /code/web/modules/contrib/canvas/src/Plugin/Field/FieldTypeOverride/CoreBugFixTextItemBaseGenerateSampleValueTrait.php(19): count()
#1 /code/web/core/lib/Drupal/Core/Field/FieldItemList.php(257): Drupal\canvas\Plugin\Field\FieldTypeOverride\TextWithSummaryItemOverride::generateSampleValue()
#2 /code/web/core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php(252): Drupal\Core\Field\FieldItemList->generateSampleItems()
#3 /code/web/core/modules/layout_builder/src/Entity/LayoutBuilderSampleEntityGenerator.php(55): Drupal\Core\Entity\ContentEntityStorageBase->createWithSampleValues()
#4 /code/web/core/modules/layout_builder/src/Plugin/SectionStorage/DefaultsSectionStorage.php(236): Drupal\layout_builder\Entity\LayoutBuilderSampleEntityGenerator->get()
#5 /code/web/core/modules/layout_builder/src/Context/LayoutBuilderContextTrait.php(51): Drupal\layout_builder\Plugin\SectionStorage\DefaultsSectionStorage->getContextsDuringPreview()
#6 /code/web/core/modules/layout_builder/src/Element/LayoutBuilder.php(310): Drupal\layout_builder\Element\LayoutBuilder->getPopulatedContexts()
#7 /code/web/core/modules/layout_builder/src/Element/LayoutBuilder.php(197): Drupal\layout_builder\Element\LayoutBuilder->buildAdministrativeSection()
#8 /code/web/core/modules/layout_builder/src/Element/LayoutBuilder.php(171): Drupal\layout_builder\Element\LayoutBuilder->layout()
#9 [internal function]: Drupal\layout_builder\Element\LayoutBuilder->preRender()
#10 /code/web/core/lib/Drupal/Core/Security/DoTrustedCallbackTrait.php(107): call_user_func_array()
#11 /code/web/core/lib/Drupal/Core/Render/Renderer.php(910): Drupal\Core\Render\Renderer->doTrustedCallback()
#12 /code/web/core/lib/Drupal/Core/Render/Renderer.php(441): Drupal\Core\Render\Renderer->doCallback()
#13 /code/web/core/lib/Drupal/Core/Render/Renderer.php(230): Drupal\Core\Render\Renderer->doRender()
#14 /code/web/core/modules/layout_builder/src/Element/LayoutBuilder.php(139): Drupal\Core\Render\Renderer->render()
#15 [internal function]: Drupal\layout_builder\Element\LayoutBuilder::renderLayoutBuilderAfterForm()
#16 /code/web/core/lib/Drupal/Core/Security/DoTrustedCallbackTrait.php(107): call_user_func_array()
#17 /code/web/core/lib/Drupal/Core/Render/Renderer.php(910): Drupal\Core\Render\Renderer->doTrustedCallback()
#18 /code/web/core/lib/Drupal/Core/Render/Renderer.php(441): Drupal\Core\Render\Renderer->doCallback()
#19 /code/web/core/lib/Drupal/Core/Render/Renderer.php(230): Drupal\Core\Render\Renderer->doRender()
#20 /code/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(242): Drupal\Core\Render\Renderer->render()
#21 /code/web/core/lib/Drupal/Core/Render/Renderer.php(634): Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}()
#22 [internal function]: Drupal\Core\Render\Renderer::Drupal\Core\Render\{closure}()
#23 /code/web/core/lib/Drupal/Core/Render/Renderer.php(649): Fiber->resume()
#24 /code/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(235): Drupal\Core\Render\Renderer->executeInRenderContext()
#25 /code/web/core/lib/Drupal/Core/Render/MainContent/HtmlRenderer.php(131): Drupal\Core\Render\MainContent\HtmlRenderer->prepare()
#26 /code/web/core/lib/Drupal/Core/EventSubscriber/MainContentViewSubscriber.php(90): Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse()
#27 /code/vendor/symfony/event-dispatcher/EventDispatcher.php(246): Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray()
#28 /code/vendor/symfony/event-dispatcher/EventDispatcher.php(206): Symfony\Component\EventDispatcher\EventDispatcher::Symfony\Component\EventDispatcher\{closure}()
#29 /code/vendor/symfony/event-dispatcher/EventDispatcher.php(56): Symfony\Component\EventDispatcher\EventDispatcher->callListeners()
#30 /code/vendor/symfony/http-kernel/HttpKernel.php(188): Symfony\Component\EventDispatcher\EventDispatcher->dispatch()
#31 /code/vendor/symfony/http-kernel/HttpKernel.php(76): Symfony\Component\HttpKernel\HttpKernel->handleRaw()
#32 /code/web/core/lib/Drupal/Core/StackMiddleware/Session.php(53): Symfony\Component\HttpKernel\HttpKernel->handle()
#33 /code/web/core/lib/Drupal/Core/StackMiddleware/KernelPreHandle.php(48): Drupal\Core\StackMiddleware\Session->handle()
#34 /code/web/core/lib/Drupal/Core/StackMiddleware/ContentLength.php(28): Drupal\Core\StackMiddleware\KernelPreHandle->handle()
#35 /code/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(118): Drupal\Core\StackMiddleware\ContentLength->handle()
#36 /code/web/core/modules/page_cache/src/StackMiddleware/PageCache.php(92): Drupal\page_cache\StackMiddleware\PageCache->pass()
#37 /code/web/core/lib/Drupal/Core/StackMiddleware/ReverseProxyMiddleware.php(48): Drupal\page_cache\StackMiddleware\PageCache->handle()
#38 /code/web/core/lib/Drupal/Core/StackMiddleware/NegotiationMiddleware.php(51): Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle()
#39 /code/web/core/lib/Drupal/Core/StackMiddleware/AjaxPageState.php(53): Drupal\Core\StackMiddleware\NegotiationMiddleware->handle()
#40 /code/web/core/lib/Drupal/Core/StackMiddleware/StackedHttpKernel.php(54): Drupal\Core\StackMiddleware\AjaxPageState->handle()
#41 /code/web/core/lib/Drupal/Core/DrupalKernel.php(745): Drupal\Core\StackMiddleware\StackedHttpKernel->handle()
#42 /code/web/index.php(19): Drupal\Core\DrupalKernel->handle()
#43 {main}