b23ddc18f46e1877464e3b59b93774e2 *bt1992-03-02d2t01.shn 0c5204651e1df17826cb86d86031b88b *bt1992-03-02d2t02.shn 58480c0ea7b6bfcb8ca0fd98a007b506 *bt1992-03-02d2t03.shn 5c12e4c28f0370d87c3ddfdb5ebe9e2f *bt1992-03-02d2t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned