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