No redirect present in URI

[saraelba]

Hello!!!
I get this error from from facebook page after login:

"No redirect present in URI"

May I set a redirect page in my facebook app?
Which page?

Thanks a lot!

[saraelba]

Hi!
I had fixed the error setting the proper url in config.php file.
But after login on facebook and give all permissions i got this message:

Error 403: Prohibited!
The server has understood the application, but cannot carry it out. The authorization application will not be necessary, since this action is prohibited and it is not allowed to re -request it.

I had set 755 permission for folder and 644 for files, but nothing changed.

Any clue?
Thanks! :-)