ModuleNotFoundError: No module named 'py_linq'

I have a fresh install of and ran into a problem trying out the demo.

Python 3.8.5 (default, Sep 4 2020, 02:22:02)
[Clang 10.0.0 ] :: Anaconda, Inc. on darwin
Type “help”, “copyright”, “credits” or “license” for more information.

from pylinac import Starshot
Traceback (most recent call last):
File “”, line 1, in
File “/Users/iMacLinda/opt/anaconda3/lib/python3.8/site-packages/pylinac/”, line 18, in
from pylinac.picketfence import PicketFence # must be after log analyzer
File “/Users/iMacLinda/opt/anaconda3/lib/python3.8/site-packages/pylinac/”, line 28, in
from py_linq import Enumerable
ModuleNotFoundError: No module named ‘py_linq’

Thank you

you need to install the package:

I forgot to add it to requirements until recently: