Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\security-bundle\Security\LegacyLogoutHandlerListener.php:24 Stack trace: #0 {main} thrown in C:\xampp\htdocs\retrodex\helpdesk\vendor\symfony\security-bundle\Security\LegacyLogoutHandlerListener.php on line 24