2d79acec89598757c2f0841cdf417f71 *db99-12-04d1t1.shn 4252db3e4915009c6f449dd90d9e06dc *db99-12-04d1t2.shn 538106bf8edf6e7b724b77f67a23a049 *db99-12-04d1t3.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned