Fatal error: Uncaught Error: Interface 'Symfony\Component\EventDispatcher\EventSubscriberInterface' not found in /home/benjamincb/demos/acdg-site/vendor/symfony/mailer/EventListener/MessageListener.php:28 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/symfony/mailer/EventListener/MessageListener.php on line 28