4552a5f64a9d47e0554951f8c1a8e03a *rd2001-04-01d3t01.shn 8464d01a901c81963721bd9d50a04706 *rd2001-04-01d3t02.shn 6029f61329eb3a4651c66ea2fe19595e *rd2001-04-01d3t03.shn de03696c14afff73acc0e731fc59bdc3 *rd2001-04-01d3t04.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned