XF 1.2 Facebook Integration crashed when behind a reserve proxy

[NhanNT]

My Facebook integration worked perfectly when my server run without a proxy. However, the problem started when I put the website behind a reserve proxy and the integration returns a 404 page whenever users try to register or login.

Can anyone give me some advice? Thanks in advance!

 

[Mike]

I'm struggling to get your site to load from here so I can't look at this. Can you show what the 404 error looks like?

 

[NhanNT]

actually it's what returns after clicking Login with Facebook

 

[Mike]

It looks to me like your reverse proxy is actually modifying the Location header we return. The URL is correct but on the wrong domain (this should go to Facebook).