上传大文件出现InvalidPart错误（multipartUpload上传） 求解决方法

下面是我的代码：

            var file = $(this).prop('files')[0];


            var client = new OSS.Wrapper({
                region: odata.region,
                accessKeyId: odata.accesskey,
                accessKeySecret: odata.keysecret,
                stsToken: odata.securitytoken,
                bucket: odata.bucket    
            });


            var storeAs = odata.filename;
            console.log(file.name + ' => ' + storeAs);
            client.multipartUpload(
                storeAs, file,{
                    checkpoint: checkpoint,
                    progress: function* (percentage, cpt) {
                        console.log('Progress: ' + percentage);
                        console.log('checkpoint: ' + JSON.stringify(cpt));
                        checkpoint = cpt;
                    }
                }


            ).then(
                function (result) {
                    console.log(result);
                }
            ).catch(
                function (err) {
                    console.log(err);
                }
            );


以下是返回的错误代码：
<?xml version="1.0" encoding="UTF-8"?>
<Error>
  <Code>InvalidPart</Code>
  <Message>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.</Message>
  <RequestId>5877284DE7D217CB1B39C200</RequestId>
  <HostId>dxt-brand.oss-cn-shanghai.aliyuncs.com</HostId>
  <ETag>undefined</ETag>
  <PartNumber>1</PartNumber>
  <UploadId>1FC722E82639475EB26E5D2A73A4F543</UploadId>
</Error>