HttpListenerException: 句柄无效。

HttpListenerException: 句柄无效。
--ErrorCode: 6
StackTrace:
   在 System.Net.HttpResponseStream.Dispose(Boolean disposing)
   在 System.IO.Stream.Close()
   在 System.Net.HttpListenerResponse.Dispose(Boolean disposing)
   在 System.Net.HttpListenerResponse.System.IDisposable.Dispose()
   在 System.Net.HttpListenerResponse.Close()
   在 __ScriptExecution.__sd9v97o9.GeminiApiForm.<HandleRequest>d__59.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---
   在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
   在 System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
   在 System.Threading.ThreadPoolWorkQueue.Dispatch()