Getting ResponseNotReady() when logging in

[ghost]

I have used the exact same code from Facebook example, but 80% of the time I see the error ResponseNotReady(). What could possibly cause this? And sometimes it returns the correct answer. I have tried both test apps and main app.

P.S. : Because Facebook is restricted in my local region(by the region), I use a proxy and put my flask app in the white-list so it will be able to communicate with Facebook.