urlpatterns = [
    path('', include('home.urls')),  # Change to ads.urls
    path('ads/', include('ads.urls')),
    path('admin/', admin.site.urls),# Keep
    path('accounts/', include('django.contrib.auth.urls')),  # Keep
    re_path(r'^oauth/', include('social_django.urls', namespace='social')),  # Keep
    path('logout/', LogoutView.as_view(next_page=reverse_lazy('ads:all')), name='logout'),
]

It says you have to change the home.urls path to ads.urls. Not add ads.urls.