I modified files.py to use the absolute paths for the PLOTLY_DIR and TEST_DIR
This file is in:
/home/jziebart/python/lib/python2.7/site-packages/plotly

Commands to run as apache:
Run from /sourcecodes/data:
sudo su -s /bin/bash apache -c "/home/jziebart/python/Python-2.7.15/python ../cv_plotly.py LvQ"
sudo su -s /bin/bash apache -c "sh ../plotly_loo.sh"

Run from /sourcecodes:
sudo su -s /bin/bash apache -c "./run_loo LvQ Weight"