Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\KernelEvent" not found in /home/v2appclykk/public_html/routing_management/vendor_01/symfony/http-kernel/Event/FinishRequestEvent.php:19 Stack trace: #0 {main} thrown in /home/v2appclykk/public_html/routing_management/vendor_01/symfony/http-kernel/Event/FinishRequestEvent.php on line 19