Problem/Motivation
The website encountered an unexpected error. Please try again later.
Drupal\Component\Plugin\Exception\PluginException: Plugin (taxonomy_manager_tree) instance class "Drupal\taxonomy_manager\Element\TaxonomyManagerTree" does not exist. in Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass() (line 97 of core/lib/Drupal/Component/Plugin/Factory/DefaultFactory.php).
Drupal\Core\Plugin\Factory\ContainerFactory->createInstance('taxonomy_manager_tree', Array) (Line: 83)
Drupal\Component\Plugin\PluginManagerBase->createInstance('taxonomy_manager_tree', Array) (Line: 141)
Drupal\Core\Render\ElementInfoManager->createInstance('taxonomy_manager_tree') (Line: 111)
Drupal\Core\Render\ElementInfoManager->buildInfo('core') (Line: 77)
Drupal\Core\Render\ElementInfoManager->getInfo('form') (Line: 811)
Drupal\Core\Form\FormBuilder->prepareForm('user_login_form', Array, Object) (Line: 279)
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: 564)
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: 158)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 80)
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: 51)
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)
Steps to reproduce
Proposed resolution
Remaining tasks
User interface changes
API changes
Data model changes