Currently, if a PageGroup is requested, the [ValidateTopic] will redirect to the first child that IsVisible(). If there are no children that satisfy that condition, it will attempt to redirect to a null path, which throws an exception. Instead, we should prefer to return a 403 Forbidden response, which is similar to attempting to browse a directory without a default document in it.
Currently, if a
PageGroupis requested, the[ValidateTopic]will redirect to the first child thatIsVisible(). If there are no children that satisfy that condition, it will attempt to redirect to a null path, which throws an exception. Instead, we should prefer to return a 403 Forbidden response, which is similar to attempting to browse a directory without a default document in it.