When I trying to access the admin page it gives me the following error:
System check identified no issues (0 silenced).
June 21, 2016 - 15:26:14
Django versi
You should not change MIDDLEWARE to MIDDLEWARE_CLASSES. What happens here is more likely that you created the app with django 1.10 and now you are running it with 1.9 or a previous version.
Make sure you use a specific version of django(and all other libraries) so your project doesn't break when deploying or running on different machines.
If you have a stable codebase simply run:
pip freeze > requirements.txt
And then when deploying or setting up a new env just do:
pip install -r requirements.txt
You should always consider using fixed versions of your libraries(and hopefully virtual envs), and when upgrading dependencies test each version change.