Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /var/www/html/demo.ininli.ca/releases/18/vendor/vich/uploader-bundle/src/Event/Event.php:13 Stack trace: #0 {main} thrown in /var/www/html/demo.ininli.ca/releases/18/vendor/vich/uploader-bundle/src/Event/Event.php on line 13