Fatal error: Uncaught Error: Class 'Drupal\Core\Controller\ControllerBase' not found in /var/www/html/tmp/contrib/entity_type_clone/src/Controller/EntityTypeCloneController.php:13 Stack trace: #0 {main} thrown in /var/www/html/tmp/contrib/entity_type_clone/src/Controller/EntityTypeCloneController.php on line 13