Permission checking decorators raise internal server error if the user is anonymous

Some views raise an HTTP 500 error if the user is currently not signed in. Example:

@permission_required(
    "alsijil.view_person_overview",
    fn=objectgetter_optional(
        Person.objects.prefetch_related("member_of__owners"), "request.user.person", True
    ),
)
def overview_person(request: HttpRequest, id_: Optional[int] = None) -> HttpResponse: