我今天将 PayPalCoreSDK 更新到最新版本，因为我遇到了 OAuth 错误。更新所有内容后，我继续收到错误，但这是一个无法描述的错误。以下是记录的错误：
ERROR PayPal.Exception.PayPalException [(null)] Exception in HttpConnection Execute: The request was aborted: The request was canceled.
PayPal.Exception.PayPalException: Exception in HttpConnection Execute: The request was aborted: The request was canceled. ---> System.Net.WebException: The request was aborted: The request was canceled. ---> System.IO.IOException: Cannot close stream until all bytes are written.
at System.Net.ConnectStream.CloseInternal(Boolean internalCall, Boolean aborting)
--- End of inner exception stack trace ---
at System.Net.ConnectStream.CloseInternal(Boolean internalCall, Boolean aborting)
at System.Net.ConnectStream.System.Net.ICloseEx.CloseEx(CloseExState closeState)
at System.Net.ConnectStream.Dispose(Boolean disposing)
at System.IO.Stream.Close()
at System.IO.StreamWriter.Dispose(Boolean disposing)
at System.IO.TextWriter.Dispose()
at PayPal.HttpConnection.Execute(String payLoad, HttpWebRequest httpRequest)
该请求正在返回承载响应。有人对我如何解决这个问题有任何想法吗？我目前正在使用沙盒信息。