- Edited
This was a missed digikam rebuild for new marble, in the future please open a bug report. Symlinking is not the solution.
New digikam/kipi will move shortly, but for now you can get the fixed versions with:
sudo pacman -U http://kaosx.tk/repo/build/digikam-5.6.0-3-x86_64.pkg.tar.xz http://kaosx.tk/repo/build/kipi-plugins-5.6.0-3-x86_64.pkg.tar.xz
EDIT:
New digikam is now up in the apps repo, update your system once your mirror has synced.