Guys Please check https://github.com/fossasia/open-event-server/pull/4737#issue-188524505
FB authentication is complete to best of my knowledge.
The response shows access_token and token_type, though the screenshot is having black marks to hide access_token a bit due to security issues. So please don't mind. :smile:
Also, this is a priority issue and a big feature too. So it would be good to split it and take responsibilities individually. (You can follow the implementation of FB PR too) In that case this PR is ready to merge too.