nvim-dap-python not working

[tjensch]

Hello, I am new to nvim, reading your great medium-articles and fiddle around with this awesome configuration. I've just cloned the repo and added only a colorscheme and a keymapping(: ;). However, I cant get python debug running.
the error is referenced here #mfussenegger/nvim-dap-python#100
Do you have any suggestions how to triage that as a newbie with no lua programming skills? Thanks a lot!