Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in D:\NTG_App\www\NTG_KPI\app\Http\Controllers\SourceFileUploadController.php:15 Stack trace: #0 {main} thrown in D:\NTG_App\www\NTG_KPI\app\Http\Controllers\SourceFileUploadController.php on line 15