Fatal error: Uncaught Error: Interface "Symfony\Component\EventDispatcher\EventDispatcherInterface" not found in /srv/www/sites/public/starter-cms/vendor/symfony/event-dispatcher/EventDispatcher.php:32 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-cms/vendor/symfony/event-dispatcher/EventDispatcher.php on line 32