Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\RequestEvent" not found in I:\www\frameworks\Laravel\vendor\symfony\http-kernel\Event\GetResponseForControllerResultEvent.php:20 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\symfony\http-kernel\Event\GetResponseForControllerResultEvent.php on line 20