The scenario is,
I cloned the Django code for OpenShift-V3 from here . When I run the code using python manage.py runserver getting an error as,
python manage.py runserver
Read carefully, it might say "The above exception was the direct cause of the following exception: ...". And the "above exception" being you forgot to install whitehoise. Run pip install whitenoise, it worked for me.
pip install whitenoise