Fatal error: Uncaught Error: Class "Drupal\node\Form\NodeRevisionRevertForm" not found in /home/www/drupal8/test/core/modules/node/src/Form/NodeRevisionRevertTranslationForm.php:18 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/node/src/Form/NodeRevisionRevertTranslationForm.php on line 18