cschmid [1] filed a deletion request for vysor-git [2]: Package seems to be not functional (Black screen, see my comment), and nobody responded when pointing it out, so it seems to not getting fixed. Also, a newer, fully functional and up-to-date package 'vysor- appimage' exists.
[1] https://aur.archlinux.org/account/cschmid/ [2] https://aur.archlinux.org/pkgbase/vysor-git/
