File "foobar/urls.py", line 35, in <module>
url(r'^dashboard/docdata/', include(docdata_app.urls)),
File "/usr/local/lib/python3.6/site-packages/django/urls/conf.py", line 27, in include
'provide the namespace argument to include() instead.' % len(arg)
django.core.exceptions.ImproperlyConfigured: Passing a 3-tuple to include() is not supported. Pass a 2-tuple containing the list of patterns and app_name, and provide the namespace argument to include() instead.
django 2.0 support is not done, yet: