527e1e5aad0ab1e6123c273caf90f994 *gd72-9-21d2t01.shn 590131a2a5bcbcd9b9ab261ba33ed4a6 *gd72-9-21d2t02.shn b3db5d8bc7de0f5d5f0828786cfd3edf *gd72-9-21d2t03.shn 5bed40b266a2f07f53d0b0f1a0e903c9 *gd72-9-21d2t04.shn App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned