File "E:\fastapi_tutorial\venv\lib\site-packages\requests\sessions.py", line 655, in send

    r = adapter.send(request, **kwargs)

  File "E:\fastapi_tutorial\venv\lib\site-packages\requests\adapters.py", line 510, in send

    raise ProxyError(e, request=request)

requests.exceptions.ProxyError: HTTPSConnectionPool(host='coronavirus-tracker-api.herokuapp.com', port=443): Max retries exceeded with url: /v2/locations?source=jhu&country_code=CN&timelines=false (Caused by ProxyError('Cannot connect to proxy.', OSError(0, 'Error')))