ConnectionRefusedError: [Errno 111] Connection refused

运行代码时出现以下错误：
raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: HTTPConnectionPool(host='localhost', port=8097): Max retries exceeded with url: /env/main (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused'))
 

1.如果用到Visdom

 

2.运行了 python -m visdom.server