Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Event\KernelEvent" not found in C:\PHP\APPS\production\aictec_license_web\vendor\symfony\http-kernel\Event\RequestEvent.php:25 Stack trace: #0 {main} thrown in C:\PHP\APPS\production\aictec_license_web\vendor\symfony\http-kernel\Event\RequestEvent.php on line 25