sarana 2006-05-23 sahkomakkonen 2 Source: Transfer: 1. shkmkn2-01 1. shkmkn2-01 1. shkmkn2-01 2. shkmkn2-02 2. shkmkn2-02 2. shkmkn2-02 3. shkmkn2-03 3. shkmkn2-03 3. shkmkn2-03 App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned