Problem/Motivation
The following warning gets displayed, when installing and operating inside the module:
Warning: Undefined array key "label" in Drupal\Core\Entity\Plugin\DataType\Deriver\EntityDeriver->getDerivativeDefinitions() (line 108 of core/lib/Drupal/Core/Entity/Plugin/DataType/Deriver/EntityDeriver.php).
Drupal\Core\Entity\Plugin\DataType\Deriver\EntityDeriver->getDerivativeDefinitions(Array) (Line: 101)
Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDerivatives(Array) (Line: 87)
Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDefinitions() (Line: 291)
Drupal\Core\Plugin\DefaultPluginManager->findDefinitions() (Line: 181)
Drupal\Core\Plugin\DefaultPluginManager->getDefinitions() (Line: 22)
Drupal\Core\Plugin\DefaultPluginManager->getDefinition('field_item:boolean') (Line: 195)
Drupal\Core\TypedData\DataDefinition->getClass() (Line: 606)
Drupal\Core\Field\BaseFieldDefinition->getMainPropertyName() (Line: 106)
Drupal\Core\Entity\Query\Sql\Tables->addField('rediscover', 'INNER', NULL) (Line: 58)
Drupal\Core\Entity\Query\Sql\Condition->compile(Object) (Line: 176)
Drupal\Core\Entity\Query\Sql\Query->compile() (Line: 81)
Drupal\Core\Entity\Query\Sql\Query->execute() (Line: 64)
Drupal\menu_link_content\Plugin\Deriver\MenuLinkContentDeriver->getDerivativeDefinitions(Array) (Line: 101)
Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDerivatives(Array) (Line: 87)
Drupal\Component\Plugin\Discovery\DerivativeDiscoveryDecorator->getDefinitions() (Line: 125)
Drupal\Core\Menu\MenuLinkManager->getDefinitions() (Line: 150)
Drupal\Core\Menu\MenuLinkManager->rebuild() (Line: 82)
admin_toolbar_tools_entity_update(Object, 'node_type')
call_user_func_array(Object, Array) (Line: 409)
Drupal\Core\Extension\ModuleHandler->Drupal\Core\Extension\{closure}(Object, 'admin_toolbar_tools') (Line: 388)
Drupal\Core\Extension\ModuleHandler->invokeAllWith('entity_update', Object) (Line: 408)
Drupal\Core\Extension\ModuleHandler->invokeAll('entity_update', Array) (Line: 343)
Drupal\Core\Config\Entity\ConfigEntityStorage->invokeHook('update', Object) (Line: 564)
Drupal\Core\Entity\EntityStorageBase->doPostSave(Object, 1) (Line: 489)
Drupal\Core\Entity\EntityStorageBase->save(Object) (Line: 257)
Drupal\Core\Config\Entity\ConfigEntityStorage->save(Object) (Line: 112)
Drupal\webprofiler\Entity\ConfigEntityStorageDecorator->save(Object) (Line: 339)
Drupal\Core\Entity\EntityBase->save() (Line: 609)
Drupal\Core\Config\Entity\ConfigEntityBase->save() (Line: 222)
Drupal\node\NodeTypeForm->save(Array, Object)
call_user_func_array(Array, Array) (Line: 114)
Drupal\Core\Form\FormSubmitter->executeSubmitHandlers(Array, Object) (Line: 52)
Drupal\Core\Form\FormSubmitter->doSubmitForm(Array, Object) (Line: 597)
Drupal\Core\Form\FormBuilder->processForm('node_type_edit_form', Array, Object) (Line: 325)
Drupal\Core\Form\FormBuilder->buildForm(Object, Object) (Line: 73)
Drupal\Core\Controller\FormController->getContentResult(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 583)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 121)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 166)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 74)
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: 106)
Drupal\page_cache\StackMiddleware\PageCache->pass(Object, 1, 1) (Line: 85)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 42)
Drupal\tracer\StackMiddleware\TracesMiddleware->handle(Object, 1, 1) (Line: 34)
Drupal\webprofiler\StackMiddleware\WebprofilerMiddleware->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)
Steps to reproduce
Proposed resolution
Fix the issue.
Remaining tasks
User interface changes
API changes
Data model changes