Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\Exception\HttpException" not found in D:\Apache24\www\sciegen\backend\vendor\symfony\http-kernel\Exception\GoneHttpException.php:17 Stack trace: #0 {main} thrown in D:\Apache24\www\sciegen\backend\vendor\symfony\http-kernel\Exception\GoneHttpException.php on line 17