Fatal error: Uncaught Error: Class 'Illuminate\Http\UploadedFile' not found in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Http/Testing/File.php:7 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Http/Testing/File.php on line 7