gsd-print-notif[1182]: Source ID 4 was not found when attempting to remove it
With Debian Sid/unstable and gnome-settings-daemon 3.36.0-1+b1, looking through journalctl --user
(containing the GDM and user messages when logging into GNOME Shell session), the warning is there.
gsd-print-notif[1182]: Source ID 4 was not found when attempting to remove it