jinja2.exceptions.UndefinedError: 'tcdrop' is undefined

[shildenbrand]

Debian 10 Buster

python3 -m pip install -r requirements
python3 run.py

Loads up fine, but when I try to click settings or configure anything
it throws the Jinja2 error. I have it running on my MAC fine with the same python version (3.7)