Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in C:\laragon\www\coaster-world\app\Http\Controllers\Web\GroupVisitChallengeController.php:21 Stack trace: #0 {main} thrown in C:\laragon\www\coaster-world\app\Http\Controllers\Web\GroupVisitChallengeController.php on line 21