Libreoffice-fresh-7.4.3-3 is up to date but /var/lib/pacman/local/libreoffice-fresh-7.4.3-3/desc: missing

Try creating the missing file manually and then reinstall the package:

sudo touch /var/lib/pacman/local/libreoffice-fresh-7.4.3-3/desc

sudo pacman -S libreoffice-fresh

The use of any package manager using packagekit is not recommended on Arch (-based distros) since it would obfuscate the install/update process and no opportunity is given to the user if/when there is a need for manual intervention.