Fatal error: Uncaught Error: Interface 'Symfony\Component\HttpKernel\HttpKernelInterface' not found in E:\xampp\htdocs\www\yunwei\qr251\vendor\symfony\http-kernel\KernelInterface.php:25 Stack trace: #0 {main} thrown in E:\xampp\htdocs\www\yunwei\qr251\vendor\symfony\http-kernel\KernelInterface.php on line 25