When building the Error "ListStore' is an ambiguous reference between `GLib.ListStore' and `Gtk.ListStore'" occurs a few times in EditThemeWindow.vala, EditWidgetWindow.vala, SettingsWindow.vala.
When building the Error "ListStore' is an ambiguous reference between `GLib.ListStore' and `Gtk.ListStore'" occurs a few times in EditThemeWindow .vala, EditWidgetWindo w.vala, SettingsWindow. vala.