Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Definition" not found in /home/amper418/shopv2.amperio.ch/vendor/symfony/dependency-injection/ChildDefinition.php:22 Stack trace: #0 {main} thrown in /home/amper418/shopv2.amperio.ch/vendor/symfony/dependency-injection/ChildDefinition.php on line 22