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 502, in send
    raise ProxyError(e, request=request)
ProxyError: HTTPSConnectionPool(host='www.linkedin.com', port=443): Max retries exceeded with url: / (Caused by ProxyError('Cannot connect to proxy.', error(13, 'Permission denied')))