Fatal error: Uncaught Error: Class "Symfony\Bundle\FrameworkBundle\Controller\AbstractController" not found in /home/amper418/shopv2.amperio.ch/vendor/shopware/core/System/User/Api/UserValidationController.php:16 Stack trace: #0 {main} thrown in /home/amper418/shopv2.amperio.ch/vendor/shopware/core/System/User/Api/UserValidationController.php on line 16