0cc15029a31f97b29776b3e99c17f48a *db2003-12-31d2t01.shn 31500cfc204845e8d43247e5d195c782 *db2003-12-31d2t02.shn aca555e593422b8c0097a29d0234fafc *db2003-12-31d2t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned