Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Exception\HttpException" not found in D:\Apache24\www\project\Backstage\vendor\symfony\http-kernel\Exception\AccessDeniedHttpException.php:18 Stack trace: #0 {main} thrown in D:\Apache24\www\project\Backstage\vendor\symfony\http-kernel\Exception\AccessDeniedHttpException.php on line 18