Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventDispatcherInterface" not found in /users/ms-it/www/oc/lib/composer/symfony/event-dispatcher/LegacyEventDispatcherProxy.php:25 Stack trace: #0 {main} thrown in /users/ms-it/www/oc/lib/composer/symfony/event-dispatcher/LegacyEventDispatcherProxy.php on line 25