e9f4038dda21e660b9915c9bf098af91 [shntool] gd67-08-04t01.shn a4fa8f4ae4f254b59cb3ead287ab81cd [shntool] gd67-08-04t02.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned