In https://github.com/omab/python-social-auth/blob/master/social/backends/facebook.py#L177-L196 the code confuses `str` with `bytes` many times, requiring several fixes to work with Python3.
In https://github.com/omab/python-social-auth/blob/master/social/backends/facebook.py#L177-L196 the code confuses
strwithbytesmany times, requiring several fixes to work with Python3.