AttributeError in mdv - object has no attribute 'ansi'

[dimitar-petrov]

I am getting the following exception.

chef-cli --problem PRACTICE PPERM
Traceback (most recent call last):
  File "/home/dpetrov/develop/python/learn/.venv/bin/mdv", line 11, in <module>
    sys.exit(run())
  File "/home/dpetrov/develop/python/learn/.venv/lib/python3.6/site-packages/mdv/markdownviewer.py", line 1657, in run
    print(main(**kw) if PY3 else str(main(**kw)))
  File "/home/dpetrov/develop/python/learn/.venv/lib/python3.6/site-packages/mdv/markdownviewer.py", line 1383, in main
    ansi = MD.ansi
AttributeError: 'Markdown' object has no attribute 'ansi'

This is the environment:

pip freeze       
certifi==2018.11.29
chardet==3.0.4
chef-cli==1.0.1
colorama==0.4.1
docopt==0.6.2
idna==2.8
Markdown==3.0.1
mpv==0.1
Pygments==2.3.1
python-decouple==3.1
PyYAML==3.13
requests==2.21.0
tabulate==0.8.2
termcolor==1.1.0
termgraph==0.2.0
urllib3==1.24.1

python --version
Python 3.6.6

If I downgrade mdv to 1.6.3

chef-cli --problem PRACTICE SMPAIR
n.a. (no parsing result)