JS使用OSS上传文件时遇到InvalidPart错误

我是用的官方文档的代码测试的，使用multipartUpload方法。
代码如下： document.getElementById('file').addEventListener('change', function (e) {
var file = e.target.files[0];
var storeAs = 'upload-file';
console.log(file.name + ' => ' + storeAs);
var client = new OSS.Wrapper({
  accessKeyId: '****************',
  accessKeySecret: '************',
  stsToken: '****************',
  endpoint: '************',
  bucket: '*************'
});
client.multipartUpload(storeAs, file).then(function (result) {
console.log(result);
}).catch(function (err) {
console.log(err);
});
});


client的各参数确认是在后台获取之后放到JS对象里面的，我只上传了一个文件，然后控制台报错：

POST <--requestUrl--> 400 (Bad Request)
index.html:30 Error: One or more of the specified parts could not be found or the specified entity tag might not have matched the part's entity tag.
    at o.<anonymous> (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:4:16188)
    at i (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:6:23661)
    at u._invoke (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:6:25098)
    at u.e.(anonymous function) [as next] (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:6:23840)
    at i (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:6:23661)
    at u._invoke (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:6:24720)
    at u.e.(anonymous function) [as next] (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:6:23840)
    at a (file:///C:/Users/Administrator/Desktop/TestAliyun/aliyun-oss-sdk-4.4.4.min.js:9:25589)
    at <anonymous>


然后响应返回：


    <Error>
         <Code>InvalidPart</Code>