UnityCommunicationException

[zhazhat]

i am running in a headless mechine, i run the demo well.
But when i try to run UnityEnvironment.py and conect the env, this line: self.comm = comm_unity.UnityCommunication(port=str(self.base_port), **executable_args) get erros:

simulation.unity_simulator.comm_unity.UnityCommunicationException: HTTPConnectionPool(host='127.0.0.1', port=7897): Max retries exceeded with url: http://127.0.0.1:10000/ (Caused by ProxyError('Unable to connect to proxy', NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7f424e22a6b0>: Failed to establish a new connection: [Errno 111] Connection refused')))