Django administration add user returns Server Error (500)
run:- python manage.py makemigrations and python manage.py migrate if you add any model
I have deployed my django application to a CentOS server and everything is working fine. I can see the list of users and groups from the Django Administration page. I was able to add/edit users as well before. But now, when I'm trying to add new user, an Server Error (500) is returned. 
Is there any limitations about the number of users can be added using Django Admin page?