Help converting kateschema to kate color theme

according to the kde website we need to use

I don’t know what I am doing wrong but I cant get it to work

I tried what the readme inside /utils/schema-converter/README.rst told me to do but installing pipenv and then running “pipenv install --dev” inside the folder where the readme is, gave a lot of “kubuntu has crashed” errors and i had to restart.

how do I go about converting for example this schema. any help is appreciated.