[Python] Django cannot register oauth2_provider and rest_framework to INSTALLED_APPS

I am working on this weekend project, to learn Django and I am stuck.

Before adding the REST framework (one to last commit in the repo), everything was working just alright.

Once I added the djangorestframework library, everything fell apart. Now, whether you run the app on a venv or on DOcker, you will get the same result:

RuntimeError: Model class oauth2_provider.models.Application doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.

... or a similar one related to rest_framework's Token. Both libraries are installed.

I understand the problem is that something is wrong with INSTALLED_APPS. But... WHAT?!

The docs make me think I am not doing anything wrong. If you look at the imports, from rest_framework etc etc and from oauth2_provider etc etc seem to be the problem.

Error logs and stack traces are quite useless, there is not useful info in there. Your help will be much appreciated.

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