Answers for "r class 'app\http\controllers\redirect' not found"

Class 'App\Http\Controllers\File' not found

// Class 'App\Http\Controllers\File' not found
use Illuminate\Support\Facades\File;

Class 'App\Http\Controllers\Response' not found

use Response;
Or use full namespace:

return \Response::json(...);
Or just use helper:

return response()->json(...);