no_charge_id是什么原因

[Poordeveloper]

    var amount = document.getElementById('amount').value * 100;

    var xhr = new XMLHttpRequest();
    xhr.open("POST", "http://localhost:3000/api/pay", true);
    xhr.setRequestHeader("Content-type", "application/json");
    xhr.send(JSON.stringify({
        channel: channel,
        amount: amount,
        subject: 'audi A6',
        desc: 'link to the car page for desc'
    }));

    xhr.onreadystatechange = function () {
        if (xhr.readyState == 4 && xhr.status == 200) {
            console.log(xhr.responseText);
            pingpp.createPayment(xhr.responseText, function(result, err) {
                console.log(result);
                console.log(err);
            });
        }
    }
}

{"err":null,"charge":{"id":"ch_vD4az5bXXXf5nv9y9G1G080K","object":"charge","created":1448276047,"livemode":false,"paid":false,"refunded":false,"app":"app_KO8CGC8KWzL8qTW5","channel":"upacp_wap","order_no":"6bb29e38f8b6385c5fde9f7154ba25971e1e8f14","client_ip":"127.0.0.1","amount":100000,"amount_settle":0,"currency":"cny","subject":"audi A6","body":"link to the car page for desc","extra":{"result_url":"https://mcw.avosapps.com/result"},"time_paid":null,"time_expire":1448279647,"time_settle":null,"transaction_no":null,"refunds":{"object":"list","url":"/v1/charges/ch_vD4az5bXXXf5nv9y9G1G080K/refunds","has_more":false,"data":[]},"amount_refunded":0,"failure_code":null,"failure_msg":null,"metadata":{},"credential":{"object":"credential","upacp_wap":{"version":"5.0.0","encoding":"UTF-8","certId":"164284609791532637515646828757023519875","signMethod":"01","txnType":"01","txnSubType":"01","bizType":"000000","channelType":"08","backUrl":"https://api.pingxx.com/notify/charges/ch_vD4az5bXXXf5nv9y9G1G080K","accessType":"0","merId":"259397895241124","orderId":"6bb29e38f8b6385c5fde9f7154ba25971e1e8f14","txnTime":"20151123185407","txnAmt":100000,"currencyCode":"156","customerIp":"127.0.0.1","orderDesc":"audi A6","reqReserved":"ch_vD4az5bXXXf5nv9y9G1G080K","payTimeout":"20151123195407","frontUrl":"https://mcw.avosapps.com/result","signature":"NjE1ODU1NjIwMDU1NTE2MTg1MjY5NjA2ODI4NTY5NzMwNzQ2MjExNDg1ODUzNzk3NDMzMDcyMzYyMTA2ODE0Mw=="}},"description":null}}
pay.html:52 fail

extra: "no_charge_id"
msg: "invalid_charge"
proto: Object