var initUploadRequest = new InitiateMultipartUploadRequest();
var initUploadResult = _ossClient.InitiateMultipartUpload(_aliyunOssConfig.PictureBucketName, key, initUploadRequest);

返回:Tea.TeaException: The request signature we calculated does not match the signature you provided. Check your key and signing method.

一样的client调用PutObjectAsync上传成功