pi@raspberrypi:~ $ lxi-tools.lxi-gui

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.159: Theme parser error: Default-light.css:3:20-21: Expected ':'

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.169: Theme parser warning: Default-light.css:1389:19-208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.169: Theme parser warning: Default-light.css:118:32-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.169: Theme parser warning: Default-light.css:100:1164-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.169: Theme parser warning: Default-light.css:95:111-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:95:75-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:95:39-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:93:92-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:93:11-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:91:66-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:62:786-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.170: Theme parser warning: Default-light.css:62:693-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:37:99-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:16:195-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:16:162-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:16:35-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:7:898-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:7:836-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:7:402-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.171: Theme parser warning: Default-light.css:4:583-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.172: Theme parser warning: Default-light.css:3:15-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.172: Theme parser warning: Default-light.css:3:13-1389:208: Unterminated block at end of document

    (lxi-gui:2036): Gtk-WARNING **: 19:18:25.172: Theme parser error: gtk.css:1:75-76: Expected a valid selector

    (lxi-gui:2036): Gdk-ERROR **: 19:18:26.686: Resource path /org/gtk/libgtk/icons/16x16/actions/value-decrease-symbolic.symbolic.png is not a valid image: Error reading png (IDAT: CRC error)
    Trace/breakpoint trap