84e9b0d18fcfa30d5fd5a5c0e889a10a *gd80-11-30d2t01.shn 8a7cb2f10ab52fbaaf36c8902339970b *gd80-11-30d2t02.shn d429d003c133b7212e58c5ec3e71193b *gd80-11-30d2t03.shn 716638f282aaf089aa30e9336fe39ee7 *gd80-11-30d2t04.shn App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned