Upgrading the DRF beyond 3.7.3 raises this error:
The `request` argument must be an instance of `django.http.HttpRequest`, not `rest_framework.request.Request`.
Which is related with this PR: encode/django-rest-framework#5618

The problem is that our strategy of recursively processing the URL passes every level to a get_view(), and as parameters we are using the DRF request instead of the django one.