halftone-0.6.1-alt1.noarch	freedesktop-desktop	info	desktop-file-validate utility printed the following message(s): /usr/share/applications/io.github.tfuxu.Halftone.desktop: hint: value item "ImageProcessing" in key "Categories" in group "Desktop Entry" can be extended with another category among the following categories: Education, or Science; /usr/share/applications/io.github.tfuxu.Halftone.desktop: hint: value "GNOME;GTK;Graphics;ImageProcessing;Utility;" for key "Categories" in group "Desktop Entry" contains more than one main category; application might appear more than once in the application menu;