python3 netbox/manage.py migrate ModuleNotFoundError: No module named 'django' when upgrading NetBox

[infraengineer-sre]

Environment

• Python version: Python 3.6.8
• NetBox version: v2.7.4

Steps to Reproduce

1. i got an error
   [root@NetBox netbox-2.7.12]# ./upgrade.sh
   Removing old virtual environment...
   Creating a new virtual environment at /opt/netbox-2.7.12/venv...
   Error: Command '['/opt/netbox-2.7.12/venv/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']' returned non-zero exit status 1.

---

ERROR: Failed to create the virtual environment. Check that you have
the required system packages installed and the following path is
writable: /opt/netbox-2.7.12/venv

2. i created virtualenv with "--without-pip, activate/deactivate and curl https://bootstrap.pypa.io/get-pip.py" workaround
3. i tried to run commands one by one

Expected Behavior

(venv) [root@NetBox netbox-2.7.12]# python3 netbox/manage.py migrate

Observed Behavior

Traceback (most recent call last):
  File "netbox/manage.py", line 8, in <module>
    from django.core.management import execute_from_command_line
ModuleNotFoundError: No module named 'django'

[ryanmerolle]

Did you ever sort this out?