gae-proxy-urlfetch

  File "/home/cmin/Repos/skillin/lib/requests/sessions.py", line 521, in get
    return self.request('GET', url, **kwargs)
  File "/home/cmin/Repos/skillin/lib/requests/sessions.py", line 508, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/cmin/Repos/skillin/lib/requests/sessions.py", line 618, in send
    r = adapter.send(request, **kwargs)
  File "/home/cmin/Repos/skillin/lib/requests/adapters.py", line 440, in send
    timeout=timeout
  File "/home/cmin/Repos/skillin/lib/urllib3/connectionpool.py", line 595, in urlopen
    self._prepare_proxy(conn)
  File "/home/cmin/Repos/skillin/lib/urllib3/connectionpool.py", line 814, in _prepare_proxy
    set_tunnel(self._proxy_host, self.port, self.proxy_headers)
  File "/opt/google-cloud-sdk/platform/google_appengine/google/appengine/dist27/gae_override/httplib.py", line 394, in set_tunnel
    raise NotImplementedError('HTTP CONNECT Tunnelling is not supported')
NotImplementedError: HTTP CONNECT Tunnelling is not supported