Fatal error: Uncaught Error: Class "Drupal\content_moderation\Entity\Handler\ModerationHandler" not found in /home/www/drupal8/test/core/modules/content_moderation/src/Entity/Handler/BlockContentModerationHandler.php:12 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/content_moderation/src/Entity/Handler/BlockContentModerationHandler.php on line 12