dot-matrix-3.2.0-alt1.1.x86_64 freedesktop-categories warn Menu-related Additional Categories (http://standards.freedesktop.org/menu-spec/latest/apa.html) not found in /usr/share/applications/io.github.lainsce.DotMatrix.desktop. Please add it or report a bug against this test if you already have registered one (not including menu unrelated ones as Core or Qt).; dot-matrix-3.2.0-alt1.1.x86_64 freedesktop-desktop info desktop-file-validate utility printed the following message(s): /usr/share/applications/io.github.lainsce.DotMatrix.desktop: hint: value "GNOME;GTK;Utility;Graphics;Development;" for key "Categories" in group "Desktop Entry" contains more than one main category; application might appear more than once in the application menu; /usr/share/applications/io.github.lainsce.DotMatrix.desktop: hint: value "GNOME;GTK;Utility;Graphics;Development;" for key "Categories" in group "Desktop Entry" contains more than one main category; application might appear more than once in the application menu;