Omniauth-facebook keeps reporting invalid_credentials

Question

I am trying to implement omniauth-facebook as described in Railscast #360 and have run into quite a roadblock. When I click on the signin link, I get the desired popup aski

Answer 1

I have this too.

Remove the JS script in your application.html.erb (but keep the fb-root div) will work. Anyway, the FB login screen won't be displayed in a popup window anymore, you'll be redirected to FB login then back to your site instead.