Fatal error: Uncaught Error: Interface "Symfony\Component\Messenger\Stamp\StampInterface" not found in /var/www/html/v12.hallescherfc.de/vendor/symfony/messenger/Stamp/HandledStamp.php:30 Stack trace: #0 {main} thrown in /var/www/html/v12.hallescherfc.de/vendor/symfony/messenger/Stamp/HandledStamp.php on line 30