The handler itself was removed in commit3bfaf6f88a, so the code now fails. Closes: https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/issues/455 Fixes:3bfaf6f8("js: Use connectObject()") Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell-extensions/-/merge_requests/278>