As an anon user, I go to user/login and click the facebook icon. I am redirected to a facebook page with a dialog with info about the app etc. There are two choices: "Go to app" and "cancel" .

If I hit "Go to App", I am redirected back to the drupal site registration page. No worries there.

However if I hit "Cancel" , I am taken to a page with a title "Authorization Finished" and body "The application has been authorized".

Obviously this is not desired. The page should either show information about why the request did not work, or even a simple redirect to the home page or back to the login page would be OK.

I note there are a bunch of GET args in the URL with error info.

Is there any way of customising this page?