Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\Response" not found in D:\Apache24\www\xy_yaojian\backstage\vendor\symfony\http-foundation\StreamedResponse.php:27 Stack trace: #0 {main} thrown in D:\Apache24\www\xy_yaojian\backstage\vendor\symfony\http-foundation\StreamedResponse.php on line 27