yan12125 [1] filed a orphan request for lxqt-panel-git [2]:

CDF-H commented on 2015-10-03 19:03 You need to add libdbusmenu-qt5 to the depends.

This package needs update, but the maintainer does not respond it for a long time. [1] https://aur.archlinux.org/account/yan12125/ [2] https://aur.archlinux.org/pkgbase/lxqt-panel-git/