Javascript 使用plivoapi获取未定义的类型错误

目前，我在PLIVOAPI中录制调用时遇到问题。我得到的错误是：

TypeError:无法设置未定义的属性“isVoiceRequest”

到目前为止，我已经尝试包括一个if语句，以确保uuid已设置。但这似乎对我不起作用。非常感谢您的帮助

守则：

var plivo = require('plivo');

const main = async () => {
    'use strict';

 
    var client = new plivo.Client(auth, auth);
    try {
        let response = await client.calls.create(
            "+11111111111", // from
            "+11111111111", // to
            "url", //answer url
            {
                answerMethod: "GET",
                sendDigits: '1W1'
            },
        )
        let uuid = response.requestUuid
        return uuid;
    } catch (e) {
        console.log(e)
    }

};

const record = async (uuid) => {
    try {
        var client = new plivo.Client(auth, auth);
        let record = await client.calls.record(
            uuid, // call uuid
        )
        console.log(record)
    } catch (e) {
        console.log(e)
    }

}

record(main())