515181c58f4cb5d2d0a71e5f524bf5eb *sci01-04-12d3t03.shn 139578e66bc27184e5255a57380c40f7 *sci01-04-12d3t02.shn 2dc3700dcd5530bb5b7440cc8f80ef9e *sci01-04-12d3t01.shn App\Http\Controllers\Api\ChecksumDownloadController::download(): Return value must be of type string, none returned