I have set a custom theme for my login page which uses a view.php which has a editable header nav area. This works fairly good however I notice that since changing this I can no longer go to site/dashboard as it gives an error Fatal error: Call to undefined method PageForbiddenController::getCollectionID() in /concrete/models/area.php on line 106

I have investigated and it appears that pageforbidden controller manually renders the login page from the pageforbidden controoller. I can fix the error by doing a redirect to /login instead of a render.

Having trouble understanding why I get the error in the first place as PageForbiddenController is derived from Controller which is derived from Collection which should contain the method it is looking for..