Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/deenalor/public_html/deenal_prod/src/Events/OntraitementEvent.php:9 Stack trace: #0 {main} thrown in /home/deenalor/public_html/deenal_prod/src/Events/OntraitementEvent.php on line 9