I confirm this bug on Jammy. The error message in the notification box is
Unable to install updates
Prepared update not found: "/var/lib/PackageKit/prepared-update"
and stderr says
Snapd snapd_client_refresh_sync: assertion 'name != NULL' failed
Gs snap did not set error for gs_plugin_update
Gs not GsPlugin error pk-engine-error-quark:1: Prepared update not found: /var/lib/PackageKit/prepared-update
I confirm this bug on Jammy. The error message in the notification box is
Unable to install updates PackageKit/ prepared- update"
Prepared update not found: "/var/lib/
and stderr says
Snapd snapd_client_ refresh_ sync: assertion 'name != NULL' failed error-quark: 1: Prepared update not found: /var/lib/ PackageKit/ prepared- update
Gs snap did not set error for gs_plugin_update
Gs not GsPlugin error pk-engine-