[Django]-Django urls dispatcher error (urls.E004) Ensure that urlpatterns is a list of url() instances

Delete brackets, change:

urlpatterns = i18n_patterns([
    url(r'^bar/', include('coffeebar.urls')),
    url(r'^admin/', admin.site.urls),
])

to:

urlpatterns = i18n_patterns(
        url(r'^bar/', include('coffeebar.urls')),
        url(r'^admin/', admin.site.urls),
    )