I\'m at wit\'s end. After a dozen hours of troubleshooting, probably more, I thought I was finally in business, but then I got:
Model class django.contrib.co
I got this error today and ended up here after googling. None of the existing answers seem relevant to my situation. The only thing I needed to do was to import a model from my __init__.py file in the top level of an app. I had to move my imports into the functions using the model.
Django seems to have some weird code that can fail like this in so many different scenarios!