Uninstall Issue

I'm having the same issue. With drush pmu group gnode I get:

In EntityTypeManager.php line 139:
The "group_content" entity type does not exist.

Tried #4 suggestion with no luck

I think I finally could uninstall the module with no issues. In my site, I've started with 8.x, upgraded to 2.0 then 3.0. Maybe I missed database update sor something went wrong in the update. I could uninstal after downgrading it to 2.0, and then removing the module via composer.

I'm having a similar issue, happens with both 1.x and 2.x branches. When I uninstall the group module I get this error:

Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException: You have requested a non-existent service "group_relation_type.manager". in Drupal\Component\DependencyInjection\Container->get() (line 157 of core/lib/Drupal/Component/DependencyInjection/Container.php).

Drupal\group\Entity\Storage\GroupRelationshipTypeStorage::createInstance(Object, Object) (Line: 269)
Drupal\Core\Entity\EntityTypeManager->createHandlerInstance('Drupal\group\Entity\Storage\GroupRelationshipTypeStorage', Object) (Line: 258)
Drupal\Core\Entity\EntityTypeManager->getHandler('group_content_type', 'storage') (Line: 192)
Drupal\Core\Entity\EntityTypeManager->getStorage('group_content_type') (Line: 99)
Drupal\Core\Entity\EntityTypeBundleInfo->getAllBundleInfo() (Line: 80)
Drupal\Core\Entity\EntityTypeBundleInfo->getBundleInfo('block') (Line: 103)
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:string_long') (Line: 195)
Drupal\Core\TypedData\DataDefinition->getClass() (Line: 606)
Drupal\Core\Field\BaseFieldDefinition->getMainPropertyName() (Line: 463)
Drupal\Core\Field\BaseFieldDefinition->setDefaultValue('') (Line: 54)
Drupal\Core\Entity\EditorialContentEntityBase::revisionLogBaseFieldDefinitions(Object) (Line: 23)
Drupal\Core\Entity\EditorialContentEntityBase::baseFieldDefinitions(Object) (Line: 184)
Drupal\block_content\Entity\BlockContent::baseFieldDefinitions(Object) (Line: 231)
Drupal\Core\Entity\EntityFieldManager->buildBaseFieldDefinitions('block_content') (Line: 196)
Drupal\Core\Entity\EntityFieldManager->getBaseFieldDefinitions('block_content') (Line: 455)
Drupal\Core\Entity\EntityFieldManager->getFieldStorageDefinitions('block_content') (Line: 119)
Drupal\content_moderation\Entity\Routing\EntityModerationRouteProvider->getEntityTypeIdKeyType(Object) (Line: 97)
Drupal\content_moderation\Entity\Routing\EntityModerationRouteProvider->getLatestVersionRoute(Object) (Line: 57)
Drupal\content_moderation\Entity\Routing\EntityModerationRouteProvider->getRoutes(Object) (Line: 47)
Drupal\Core\EventSubscriber\EntityRouteProviderSubscriber->onDynamicRouteEvent(Object, 'routing.route_dynamic', Object)
call_user_func(Array, Object, 'routing.route_dynamic', Object) (Line: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'routing.route_dynamic') (Line: 184)
Drupal\Core\Routing\RouteBuilder->rebuild() (Line: 83)
Drupal\Core\ProxyClass\Routing\RouteBuilder->rebuild() (Line: 546)
Drupal\Core\Extension\ModuleInstaller->uninstall(Array, 1) (Line: 91)
Drupal\Core\ProxyClass\Extension\ModuleInstaller->uninstall(Array) (Line: 174)
Drupal\system\Form\ModulesUninstallConfirmForm->submitForm(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: 595)
Drupal\Core\Form\FormBuilder->processForm('system_modules_uninstall_confirm_form', Array, Object) (Line: 323)
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: 580)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 169)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
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: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 718)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

The group module is uninstalled after this error. But when I try to visit my site I get this on all pages:

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "group_content_type" entity type does not exist. in Drupal\Core\Entity\EntityTypeManager->getDefinition() (line 139 of core/lib/Drupal/Core/Entity/EntityTypeManager.php).

Drupal\Core\Entity\EntityTypeManager->getHandler('group_content_type', 'storage') (Line: 192)
Drupal\Core\Entity\EntityTypeManager->getStorage('group_content_type') (Line: 99)
Drupal\Core\Entity\EntityTypeBundleInfo->getAllBundleInfo() (Line: 80)
Drupal\Core\Entity\EntityTypeBundleInfo->getBundleInfo('block') (Line: 65)
Drupal\content_moderation\ModerationInformation->isModeratedEntityType(Object) (Line: 55)
Drupal\content_moderation\ViewsData->Drupal\content_moderation\{closure}(Object)
array_filter(Array, Object) (Line: 56)
Drupal\content_moderation\ViewsData->getViewsData() (Line: 16)
content_moderation_views_data() (Line: 236)
Drupal\views\ViewsData->Drupal\views\{closure}(Object, 'content_moderation') (Line: 405)
Drupal\Core\Extension\ModuleHandler->invokeAllWith('views_data', Object) (Line: 244)
Drupal\views\ViewsData->getData() (Line: 154)
Drupal\views\ViewsData->get('block_content') (Line: 94)
Drupal\views\Plugin\Derivative\ViewsEntityRow->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: 146)
views_theme(Array, 'module', 'views', 'core/modules/views') (Line: 473)
Drupal\Core\Theme\Registry->processExtension(Array, 'views', 'module', 'views', 'core/modules/views') (Line: 360)
Drupal\Core\Theme\Registry->Drupal\Core\Theme\{closure}(Object, 'views') (Line: 405)
Drupal\Core\Extension\ModuleHandler->invokeAllWith('theme', Object) (Line: 361)
Drupal\Core\Theme\Registry->build() (Line: 259)
Drupal\Core\Theme\Registry->get() (Line: 88)
Drupal\Core\Utility\ThemeRegistry->initializeRegistry() (Line: 69)
Drupal\Core\Utility\ThemeRegistry->__construct('theme_registry:runtime:claro', Object, Object, Array, 1) (Line: 279)
Drupal\Core\Theme\Registry->getRuntime() (Line: 142)
Drupal\Core\Theme\ThemeManager->render(Array, Array) (Line: 433)
Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204)
Drupal\Core\Render\Renderer->render(Array, ) (Line: 242)
Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 580)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 243)
Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 132)
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: 142)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.view') (Line: 174)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
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: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 718)
Drupal\Core\DrupalKernel->handle(Object) (Line: 19)

Clearing cache fixes this error, then my site is good to use. The issue is I have a build process that imports config and tries to uninstall the group module, so this failure breaks my build process.

I'm still seeing this issue on 3.x. Clearing the cache doesn't fix the problem. When I uninstall group my site is completely down.

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "group" entity type does not exist. in Drupal\Core\Entity\EntityTypeManager->getDefinition() (line 142 of core/lib/Drupal/Core/Entity/EntityTypeManager.php).

The group module v2.2 is what I'm using for Drupal site. I updated the module to version 3.3 by following the instructions. - https://www.drupal.org/docs/extending-drupal/contributed-modules/contributed-module-documentation/group/group-v2v3-guides/upgrading-from-v2-to-v3 →

To complete the upgrade, I took the following actions -
- update from v2.2 to v3.3 first, as an issue will occur if I go to v2.3 and then try to update to v3.3.
- updated the database.
- Exported the config.
- At last run config import.

Now that group v3.3 is installed on my site, but there is a problem. When I click on Extend > Uninstall, this error message appears -

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "group_content_type" entity type does not exist. in Drupal\Core\Entity\EntityTypeManager->getDefinition() (line 142 of core/lib/Drupal/Core/Entity/EntityTypeManager.php).

Where will I find this entity? I don't understand. Could someone please help me to resolve this.

You probably still have a supporting module or custom code checking for the old entity type IDs, but I need the full stack trace to confirm. Also these last few comments were completely unrelated to the original report so please add your comments to an issue dedicated to the 2->3 upgrade path.