subscription-manager fails with 'Unable to find Subscription Manager module. Error: No module named version'

Issue

• subscription-manager fails with 'Unable to find Subscription Manager module. Error: No module named version'
• There is a pyhook report which contains a reason file like the following:

utils.py:43:<module>:ImportError: No module named version

• There is not any corruption in subscription-manager package and a configuration of third party python.

# rpm -qVa subscription-manager python
S.5....T.  c /etc/rhsm/rhsm.conf

# which python
/usr/bin/python

# python -V
Python 2.6.6

# rpm -qf /usr/bin/python
python-2.6.6-66.el6_8.x86_64

# env | grep -i PATH
PATH=/usr/lib64/qt-3.3/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin