Fatal error: Uncaught Error: Class "Drupal\Core\Entity\Routing\AdminHtmlRouteProvider" not found in /home/www/drupal8/test/core/modules/taxonomy/src/Entity/Routing/VocabularyRouteProvider.php:9 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/taxonomy/src/Entity/Routing/VocabularyRouteProvider.php on line 9