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('<urllib3.connection.HTTPConnection object at 0x7fc861bd8e48>: Failed to establish a new connection: [Errno 111] Connection refused'))
1.如果用到Visdom
2.运行了 python -m visdom.server
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