Fatal error: Uncaught Error: Class "Illuminate\Routing\Middleware\ValidateSignature" not found in C:\xampp\htdocs\slip\Warranty-UploadFile\app\Http\Middleware\ValidateSignature.php:7 Stack trace: #0 {main} thrown in C:\xampp\htdocs\slip\Warranty-UploadFile\app\Http\Middleware\ValidateSignature.php on line 7