[Fixed]-Django INSTALLED_APPS not installed and preventing makemigrations

They are in pip, albeit not in those names; they are django-autofixture, django-bootstrap3 and django-formtools respectively.

So you can install them by typing:

pip install django-autofixture django-bootstrap3 django-formtools

Edit: Use pip3 instead of pip when using python3

 pip3 install django-autofixture django-bootstrap3 django-formtools