Facebook login error

I have added the app id and secret in the admin panel.
Calling

        backendless.userService.easyLoginWithFacebookFieldsMapping(
            ["email":"email"], permissions: ["public_profile", "email", "user_friends", "user_birthday","user_about_me","user_location"],
            response: {(result : NSNumber!) -> () in
                print ("Result: \(result)")
            },
            error: { (fault : Fault!) -> () in
                print("Server reported an error: \(fault)")
        })

results in a error

Did you configure the facebook app (on the facebook side) per the instructions here?:

https://backendless.com/documentation/manage/mgmt_social_settings.htm

Looks like you didn’t set this option in .plist:
http://support.backendless.com/public/attachments/7fcffebbf8bc5c0c1df3cc8e112068ae.png</img>

Also you could try this sample from our iOS-Samples github.

Seems like configuring things on facebook side as per Mark comment worked for this.
I am still testing it and will update this thread within a day.

Please fix your docs!
https://backendless.com/documentation/users/ios/users_facebook_login.htm
I didnt see the facebook config part in this.

P.S
Any update on this. ( has been a week since asked )
http://support.backendless.com/t/rejection-for-facebook-login