The 'ipaddress' distribution was not found and is required by urllib3

When I am trying to run patroni (in python 3.6), I am getting the below error:

[root@Maindb-rep ~]# patroni --version
Traceback (most recent call last):
File “/usr/bin/patroni”, line 6, in
from pkg_resources import load_entry_point
File “/usr/lib/python3.6/site-packages/pkg_resources/init.py”, line 3095, in
@_call_aside
File “/usr/lib/python3.6/site-packages/pkg_resources/init.py”, line 3079, in _call_aside
f(*args, **kwargs)
File “/usr/lib/python3.6/site-packages/pkg_resources/init.py”, line 3108, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File “/usr/lib/python3.6/site-packages/pkg_resources/init.py”, line 570, in _build_master
ws.require(requires)
File “/usr/lib/python3.6/site-packages/pkg_resources/init.py”, line 888, in require
needed = self.resolve(parse_requirements(requirements))
File “/usr/lib/python3.6/site-packages/pkg_resources/init.py”, line 774, in resolve
raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The ‘ipaddress’ distribution was not found and is required by urllib3

[root@Maindb-rep ~]# python3 --version
Python 3.6.8

[root@Maindb-rep ~]# locate ipaddress.py
/usr/lib/python3.6/site-packages/pip/_vendor/ipaddress.py
/usr/lib64/python3.6/ipaddress.py
/usr/lib64/python3.6/site-packages/psycopg2/_ipaddress.py

What should I do to resolve this issue? (I am using Centos 8.2).

Regards,
Seenu.