As of version 2.5, NetBox no longer supports Python 2. Python 3 is required to run any 2.5 release or later.


Remove the Python2 version of gunicorn:

# pip uninstall -y gunicorn

Install Python3 and pip3, Python's package management tool:

# apt-get update
# apt-get install -y python3 python3-dev python3-setuptools
# easy_install3 pip

Install the Python3 packages required by NetBox:

# pip3 install -r requirements.txt

Replace gunicorn with the Python3 version:

# pip3 install gunicorn

If using LDAP authentication, install the django-auth-ldap package:

# pip3 install django-auth-ldap