ConnectionError upon starting app.py

I'm on MacOS with python 3.9 in a `venv`, I followed the instructions, installed `sclack` with `./setup.py install` (which was missing from the docs) and followed all the steps with the tokens.

I manage to start `app.py` and it loads up slack and shows the messages for the currently selected channel, but then after a second I get this (I can't select the text for some reason) and I have no other choice but to shut the app down. It happens every time.


The usual `slack` client is shut down if that matters.

I get that it can't resolve the host, but I have no idea what is that link, why is it trying to resolve it and why can't it ignore the failed request.

What other information can I provide?