a1373723692b348ad94e2f52f16b085b *db1999-01-19d4t01.shn d7043446497dd2f50e07231361a975d4 *db1999-01-19d4t02.shn 43ba6bc65b3e77691253213895ade572 *db1999-01-19d4t03.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned