问cos js sdk 上传提示params.AuthData is undefined ？

var Bucket = 'test-1259124110';
var Region = 'ap-shanghai';

var cos = new COS({
    // 必选参数
    getAuthorization: function (options, callback) {
        // 服务端 JS 和 PHP 例子：https://github.com/tencentyun/cos-js-sdk-v5/blob/master/server/
        // 服务端其他语言参考 COS STS SDK ：https://github.com/tencentyun/qcloud-cos-sts-sdk
        // STS 详细文档指引看：https://cloud.tencent.com/document/product/436/14048
        post({
            data: {
                url: "/backend/album/prepare_upload_photo",
                type: 'POST',
                headers: [
                    "Authorization:" + cookieValue
                ]
            },
            func: function (res) {
                console.log(res)
                callback({
                    TmpSecretId: res.data.credentials.tmpSecretId,
                    TmpSecretKey: res.data.credentials.tmpSecretKey,
                    XCosSecurityToken: res.data.credentials.sessionToken,
                    ExpiredTime: res.data.credentials.expiredTime
                });
                //初始化实例
            }
        })
    },
});




// 监听选文件
document.getElementById('file-selector2').onchange = function () {

    var file = this.files[0];
    if (!file) return;
    cos.sliceUploadFile({
        Bucket: Bucket,
        Region: Region,
        Key: getUUID(),
        Body: file
    }, function (err, data) {
        console.log(err, data);
    });
};

sessionToken: "jna6h5qMFZUM6X34vfyA3qDZc660f6F55728e2844d496ca5032b31dfde26e3964xvGlMGcz3rINro_qi7XcI7d3siZ_yTFR8V46wgCNZTNEtmuP79DsQbwT08QPyk4Cw5yzrJftxs3OR6je00QbZ5E5rHYHgQYeC8wnuCOS7vPCBAim8u1pQUeBvbPwGYKLnR5TVuIjd1VejxhLN58VMDwaZPwMjTDWCjmzkbnnZAuoyhZPgkvaJbPCUgdb2kA2uTrgLRAqUbjHpeI8_G5klim4Z1aHWQVN_Opaa_UGJfHja7pJjNBmcPib5rAnj6Bjf0Kdha6AQwOHL88TUuUjZvdeJelMVQk4QxL-mkCay6N_7aFnmTTlGeWYzrNbdwm_c4J3YhoZJUwkK-JFobDaKHqIdZuR59Ox0peN3BOsQx0l-bMe4RagME_Ce9IdYyO55jgG-e8FZFZJeQI-TN7ZwkEa1AE5h-fZ3ugByMj-BdBfKCyi52ieovC3ODdr2hOsR1n8tni7tMoVoukTGvkyA"
​​​tmpSecretId: "AKID703FtlzQNU4IvLZvEy-Sf50jXUm1hiMe4T6kWA1r7vKJs94RqiHsVu6Tm6069902"
​tmpSecretKey: "US5wx37e48E3r4RYrCXD3PodH4aVioZrQUxdgExcBPo="
expiredTime: 1557198104