I generally go direct to a reliable source for code.
You posted a link from someone or somewhere to a Google Drive from someone else without any details and spelled his name wrong.
The ketai website is now down.
The download link for the latest v14 is not working since the site can’t be reached.
The details and context are important if you are sharing code; version, source, author etc.
Fortunately, I do have a download of v14 from the original ketai source in my personal archives and also the library (also v14) installed from the Processing PDE.
There is a ticket for this here.
I can’t download the ketai library (v14 is the latest) from the Processing PDE the last time I checked.
:)