Make sure to post the complete logs, including command used and full output of the command, plus post your pacman log from the 2-3 weeks back until current.
EDIT:
Rebuild is up, this should fix wire-desktop, please test before it moves to all users
sudo pacman -U http://kaosx.tk/repo/build/wire-desktop-2.15.2751-2-x86_64.pkg.tar.xz