问在尝试使用preSignedUrl将图像上传到亚马逊网络服务s3存储桶时，我收到了400错误请求错误。哪里出了问题？

EN

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor0",
            "Effect": "Allow",
            "Action": [
                "s3:GetAccessPoint",
                "s3:PutAccountPublicAccessBlock",
                "s3:GetAccountPublicAccessBlock",
                "s3:ListAllMyBuckets",
                "s3:ListAccessPoints",
                "s3:ListJobs",
                "s3:CreateJob"
            ],
            "Resource": "*"
        },
        {
            "Sid": "VisualEditor1",
            "Effect": "Allow",
            "Action": "s3:*",
            "Resource": [
                "arn:aws:s3:::my-first-bucket-stephengr/*",
                "arn:aws:s3:::my-first-bucket-stephengr",
                "arn:aws:s3:*:041892289571:accesspoint/*",
                "arn:aws:s3:*:041892289571:job/*"
            ]
        }
    ]
}

  var key = `${req.user.id}/${uuid()}.png`;
  var fileName = key.split("/")[1];

  s3.getSignedUrl("putObject", {
      Bucket: "my-first-bucket-stephengr",
      ContentType: "image/png",
      Key: key

  }, (err, url) => {
      res.json({key, url, fileName});
  })

    var res = await axios.get("/api/upload", {headers: authHeader()});

    try{
    
        await axios.put(res.data.url, file, {headers: {ContentType: file.type}})

    }catch(err){
        console.log(err)
    }

    console.log(res.data);
}