Fatal error: Uncaught Error: Class 'Drupal\entity\Revision\RevisionableContentEntityBase' not found in /var/www/html/tmp/contrib/entity/tests/modules/entity_module_test/src/Entity/EnhancedEntity.php:85 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/entity/tests/modules/entity_module_test/src/Entity/EnhancedEntity.php on line 85