Quick start doesn't work

[skalinets]

I am new to the pactman and got stuck on the very first step. I followed the quickstart from the docs, but getting the following error:

Traceback (most recent call last):
  File "/Users/serhii/work/python-pact/test.py", line 33, in test_get_user
    result = get_user('UserA')
  File "/Users/serhii/work/python-pact/test.py", line 10, in get_user
    response = requests.get(f'http://service.example/users/{user_name}')
  File "/Users/serhii/.pyenv/versions/pact/lib/python3.9/site-packages/requests/api.py", line 73, in get
    return request("get", url, params=params, **kwargs)
  File "/Users/serhii/.pyenv/versions/pact/lib/python3.9/site-packages/requests/api.py", line 59, in request
    return session.request(method=method, url=url, **kwargs)
  File "/Users/serhii/.pyenv/versions/pact/lib/python3.9/site-packages/requests/sessions.py", line 587, in request
    resp = self.send(prep, **send_kwargs)
  File "/Users/serhii/.pyenv/versions/pact/lib/python3.9/site-packages/requests/sessions.py", line 701, in send
    r = adapter.send(request, **kwargs)
  File "/Users/serhii/.pyenv/versions/pact/lib/python3.9/site-packages/requests/adapters.py", line 565, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: MockConnectionPool(host='service.example', port=80): Max retries exceeded with url: /users/UserA (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x102363a90>: Failed to establish a new connection: [Errno 8] nodename nor servname provided, or not known'))

The code is in this gist