5301bbdc92abfa332be69834189f6b4b *db1999-05-31d2t01.shn 7a0a05b03fd36ba342a0ec11b9f29403 *db1999-05-31d2t02.shn 1e006e0fb7a78a1503d81c70baba806d *db1999-05-31d2t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned