Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\RequestEvent" not found in /home/alkhalaffamily/public_html/site/project/vendor/symfony/http-kernel/Event/GetResponseForControllerResultEvent.php:20 Stack trace: #0 {main} thrown in /home/alkhalaffamily/public_html/site/project/vendor/symfony/http-kernel/Event/GetResponseForControllerResultEvent.php on line 20