Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\KernelEvent" not found in A:\risk_server\project\hr-server\vendor\symfony\http-kernel\Event\ControllerEvent.php:28 Stack trace: #0 {main} thrown in A:\risk_server\project\hr-server\vendor\symfony\http-kernel\Event\ControllerEvent.php on line 28