You need use as_view() at the end of class based views when declaring in the urls:
path('', views.HomeView.as_view(), name="homepage"),
Also, when using login_required
decorator, you need to use it on dispatch method of CBV:
from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator
class HomeView(ListView):
@method_decorator(login_required)
def dispatch(self, *args, **kwargs):
return super(HomeView, self).dispatch(*args, **kwargs)