dcd82a24db849af3a9fd3e3034aecb5c *db2003-10-30d2t01.shn 5d03c017a4226d95f80e27a71bd39cde *db2003-10-30d2t02.shn 4b0bd55ca1d4ad8c6e983c97a8afd54a *db2003-10-30d2t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned