MarsSeed [1] filed a deletion request for zalo [2]: Was a binary package, reported broken as of 2017. (Crashed due to incompatible library versions.) Flagged as DEB source gone (404) in 2020. Linux build is no longer offered on its official website. (Only Windows, Mac and "Nokia".) Safe to delete this discontinued app, there is no way to salvage it. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/zalo/