Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/steevedfem/ekolaweb/vendor/sensio/framework-extra-bundle/EventListener/SecurityListener.php:32 Stack trace: #0 {main} thrown in /home/steevedfem/ekolaweb/vendor/sensio/framework-extra-bundle/EventListener/SecurityListener.php on line 32