konova/views/logout.py

@@ -25,9 +25,12 @@ class LogoutView(View):
             A redirect
         """
         user = request.user
+        try:
             oauth_token = user.oauth_token
             if oauth_token:
                 oauth_token.revoke()
+        except AttributeError:
+            pass
 
         logout(request)
         return redirect(SSO_SERVER_BASE)