当我尝试在nodejs中使用aws-sdk-s3-client上传文件时。它抛出一个验证错误：
错误：已解决的凭据对象在SignatureV4.validateResolvedCredentials（/API/node_modules/@aws-sdk/signature-v4/dist-cjs/SignatureV4.js：163：19）无效，位于SignatureV4.signRequest（/api/node_modules/@aws-sdk/signature-v4/dist-cjs/SignatureV4.js：88：14）
下面是我的s3 Client配置文件的样子：
s3_util.js

const dotenv = require("dotenv");
dotenv.config();
const AWS = require("@aws-sdk/client-s3");

const bucketRegion = process.env.BUCKET_REGION;
const accessKey = process.env.ACCESS_KEY;
const secretAccesskey = process.env.SECRET_ACCESS_KEY;

const s3 = new AWS.S3Client({
  credentials: {
    accessKeyId: accessKey,
    accessKey: secretAccesskey,
  },
  region: bucketRegion,
});

module.exports = s3;

上传文件到s3

const { PutObjectCommand, GetObjectCommand } = require("@aws-sdk/client-s3");
const s3 = require("./s3_util");
const { getSignedUrl } = require("@aws-sdk/s3-request-presigner");

const uploadFileToS3 = async (bucketName, file, uploadPath) => {
  console.log(file, "file");
  const commandProps = {
    Bucket: bucketName,
    Key: uploadPath + file.originalname,
    Body: file.buffer,
    ContentType: file.mimetype,
  };

  const uploadFileCommand = new PutObjectCommand(commandProps);
  let data;
  try {
    data = await s3.send(uploadFileCommand);
  } catch (error) {
    console.log(error);
    // const { requestId, cfId, extendedRequestId } = error.$$metadata;
    // console.log({ requestId, cfId, extendedRequestId });
  }
  return data;
};

我想知道为什么它会抛出一个错误，以及解决这个错误的方法是什么。