Problems while setting facebook login with NodeJs/passport

workspace
nodejs

#1

I’m getting this message : FacebookTokenError: Can’t Load URL: The domain of this URL isn’t included in the app’s domains. To be able to load this URL, add all domains and subdomains of your app to the App Domains field in your app settings.

i checked my Url entered on app domains on my facebook app setup a few times, and i cant find a solution . may it be something related to cloud9 hosting?
thanks!