r3pek [1] filed a orphan request for budgie-screenshot-applet [2]:

I did not try to contact the maintainer via email, but there's at least 3 or 4 comments on the package to fix the URL dated back as far as november last year. :(

[1] https://aur.archlinux.org/account/r3pek/ [2] https://aur.archlinux.org/pkgbase/budgie-screenshot-applet/