Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in /home/vulcans/new-v2/src/EventSubscriber/BetaGateSubscriber.php:30 Stack trace: #0 {main} thrown in /home/vulcans/new-v2/src/EventSubscriber/BetaGateSubscriber.php on line 30