db2b33938d0daa1a37aed0a9781ea0e6 *gd67-08-04t01.shn 0f5ca2d921f02eeb5413c649d9d662e2 *gd67-08-04t02.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned