対戦コマンドの実行に失敗し、エラーが出る

バトルコマンドの送信失敗 SendMessageAsync Error: Unable to read data from the transport connection: The socket has been shut down. SendMessageAsync Error: Unable to read data from the transport connection: The socket has been shut down. SendMessageAsync Error: Unable to read data from the transport connection: The socket has been shut down.
↑なんども連続して出ているが対戦中に切断すると出る?