Fatal error: Uncaught Error: Interface "Psr\EventDispatcher\StoppableEventInterface" not found in /home/baumberg/javapax/vendor/symfony/http-kernel/Event/ControllerAttributeEvent.php:25 Stack trace: #0 {main} thrown in /home/baumberg/javapax/vendor/symfony/http-kernel/Event/ControllerAttributeEvent.php on line 25