Not sure if it is related to my client or to the backend but did anyone faced a SSL certificate verify issue before? I am using a python client to push data to the graph.cool backend. The error is the following:

Traceback (most recent call last):
  File "graphcool_upload.py", line 209, in <module>
    image["name"], upload_image(**image)) 
  File "graphcool_upload.py", line 39, in upload_image
    answer = execute(query)
  File "graphcool_upload.py", line 179, in execute
    result = client.execute(query)
  File "/Users/dev/anaconda2/lib/python2.7/site-packages/graphqlclient/client.py", line 10, in execute
    return self._send(query, variables)
  File "/Users/dev/anaconda2/lib/python2.7/site-packages/graphqlclient/client.py", line 27, in _send
    response = urllib2.urlopen(req)
  File "/Users/dev/anaconda2/lib/python2.7/urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "/Users/dev/anaconda2/lib/python2.7/urllib2.py", line 429, in open
    response = self._open(req, data)
  File "/Users/dev/anaconda2/lib/python2.7/urllib2.py", line 447, in _open
    '_open', req)
  File "/Users/dev/anaconda2/lib/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/Users/dev/anaconda2/lib/python2.7/urllib2.py", line 1241, in https_open
    context=self._context)
  File "/Users/dev/anaconda2/lib/python2.7/urllib2.py", line 1198, in do_open
    raise URLError(err)
urllib2.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)>