Fatal error: Uncaught Error: Interface "Symfony\Component\HttpKernel\KernelInterface" not found in C:\xampp\htdocs\slip\Warranty-UploadFile\vendor\symfony\http-kernel\Kernel.php:56 Stack trace: #0 {main} thrown in C:\xampp\htdocs\slip\Warranty-UploadFile\vendor\symfony\http-kernel\Kernel.php on line 56