Fatal error: Uncaught Error: Class "Doctrine\DBAL\Query\QueryBuilder" not found in /home/amper418/shopv2.amperio.ch/vendor/shopware/core/Framework/DataAbstractionLayer/Dbal/QueryBuilder.php:9 Stack trace: #0 {main} thrown in /home/amper418/shopv2.amperio.ch/vendor/shopware/core/Framework/DataAbstractionLayer/Dbal/QueryBuilder.php on line 9