Django: Error: You don't have permission to access that port

Question

I'm very new to this whole setup so please be nice. On dev the command usually works with no errors but since I have been experimenting with different commands for Django someting has gone wrong.

python manage.py runserver 0.0.0.0:80

I don't have permission to use this port anymore. I can use port 8080 but the website doesn't work when I add the port to the end of the usual host name in the url. When I used port 80 I never had to add :80 to the url anyway.

I had an error where I didn't have permissions to the log file but I changed the permissions on that file. It seems there is now many things I don't have permissions for.

Django 1.8.5. Using a virtual envirnment and I have 2 apps in the project.