Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\RequestEvent" not found in /home/technoon/public_html/demo/yondy/vendor/symfony/security-http/Event/LazyResponseEvent.php:25 Stack trace: #0 {main} thrown in /home/technoon/public_html/demo/yondy/vendor/symfony/security-http/Event/LazyResponseEvent.php on line 25