8686fdb8d7ad480448ba008920c1ebe3 gd87-09-19d2t01.shn 8267a48576028e86ce4d0a655c316412 gd87-09-19d2t02.shn cc06c62ec9883bfde6630e4c6f68d9e5 gd87-09-19d2t03.shn b461a4c1e4e7782d0d8f2710d6a991b9 gd87-09-19d2t04.shn App\Http\Controllers\Api\FileDownloadController::download(): Return value must be of type string, none returned