Encoding issue

[Antonin Delpeuch]

Traceback (most recent call last):
  File "listener.py", line 33, in <module>
    for i, batch in enumerate(grouper(s.stream(fetch_from), 50)):
  File "/data/project/editgroups/www/python/src/store/stream.py", line 13, in stream
    for event in EventSource(url):
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/sseclient.py", line 98, in __next__
    self._connect()
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/sseclient.py", line 56, in _connect
    self.resp = requester.get(self.url, stream=True, **self.requests_kwargs)
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/requests/api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/requests/api.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/requests/sessions.py", line 533, in request
    resp = self.send(prep, **send_kwargs)
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/requests/sessions.py", line 646, in send
    r = adapter.send(request, **kwargs)
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/requests/adapters.py", line 449, in send
    timeout=timeout
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/urllib3/connectionpool.py", line 600, in urlopen
    chunked=chunked)
  File "/data/project/editgroups/listener_venv/lib/python3.5/site-packages/urllib3/connectionpool.py", line 354, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/usr/lib/python3.5/http/client.py", line 1107, in request
    self._send_request(method, url, body, headers)
  File "/usr/lib/python3.5/http/client.py", line 1147, in _send_request
    self.putheader(hdr, value)
  File "/usr/lib/python3.5/http/client.py", line 1079, in putheader
    values[i] = one_value.encode('latin-1')
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 0-1: ordinal not in range(256)