Regardless of chosing Yes or No, Artix with KDE cannot be updated. Please reinstate support for KDE.
:: Starting full system upgrade...
resolving dependencies...
looking for conflicting packages...
:: kdiagram5 and kdiagram are in conflict. Remove kdiagram? [y/N] <----- YES and NO DOES NOT WORK!
error: unresolvable package conflicts detected
error: failed to prepare transaction (conflicting dependencies)
Are you not going to reinstate support for KDE? Why did you remove it? The last ISO is from 4 months ago. For a rolling release its a death. I didn't see any announcement that you stopped supporting KDE.
Smells like Arch repos are enabled.