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