Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventSubscriberInterface" not found in C:\svn\conexerp\vendor\symfony\mailer\EventListener\MessengerTransportListener.php:24 Stack trace: #0 {main} thrown in C:\svn\conexerp\vendor\symfony\mailer\EventListener\MessengerTransportListener.php on line 24