The Octopi Qt6 version is now complete with fixes including a correct version. You may need to install it manually as the new version is 0.15.0+19+ga081ac2b-1. There was a “newer” broken 0.16dev.r19.ga081ac2b-1 version pushed erroneously earlier.
Remove that. No, creating symlinks in the system is never a “fix”.
Note that it now depends on qt-sudo and replaces the old notifier packages.