lg 결제 오류

function launchCrossPlatform(frm) {
    console.log($("#LGD_PAYREQUEST input").serialize()); //주문번호 테스트
    $.ajax({
        url: g5_url+"/shop/lg/xpay_request.php",
        type: "POST",
        data: $("#LGD_PAYREQUEST input").serialize(),
        dataType: "json",
        async: false,
        cache: false,
        success: function(data) {
            frm.LGD_HASHDATA.value = data.LGD_HASHDATA;

            lgdwin = openXpay(frm, '<?php echo $CST_PLATFORM; ?>', LGD_window_type, null, "", "");
        },
        error: function(data) {
            console.log(data);
        }
    });
}