Hope to be in the right category. I am on cachy os for two month now and nearly everything is working more than well. One of the problems I had was with paperwork which did not start. Paperwork for me is important because every document i have in archive passes there. So, for a while i made a workaround with distrobox and paperwork on a Fedora box. This week i had a little bit of time to search the reason. Starting it from terminal I found the reason and I share it here the solution, it is a dependency needed but not installed.
sudo pacman -S python-narwhals
ed ecco, paperwork is working fine.