amronrails / rails-messenger-bot Goto Github PK

Hi,

I have just followed all your process through the youtube, however I still have the same message when I try to edit the webhook (I say "edit" because I succeeded in validating the webhook the first time without any controller method, but I disconnected ngrok so I have to edit the callback url): render text: params["hub.challenge"] does not work correctly since Facebook receives html: "\u003C!DOCTYPE html>\n\u003Chtm..." or an empty string: "\n" if I add layout:false at the end of the render.
I am not able to render to Facebook what hub.challengecontains.

Could you help resolve this bug?
Thanks a lot
Guillaume