071152cf6dea9f108536824112127f49 *db1999-03-22d2t01.shn c2df23b2a2e2eb02fec099843898413c *db1999-03-22d2t02.shn bb8d0ed65e0c221333188de1bdf82a44 *db1999-03-22d2t03.shn 52d5a8e1ed5dddaebfe2c88ab954bd07 *db1999-03-22d2t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned