Fatal error: Uncaught Error: Interface "Psr\EventDispatcher\StoppableEventInterface" not found in C:\wamp64\houda\vendor\symfony\http-kernel\Event\ControllerAttributeEvent.php:26 Stack trace: #0 {main} thrown in C:\wamp64\houda\vendor\symfony\http-kernel\Event\ControllerAttributeEvent.php on line 26