update-manager crashes when started

[Giacomo Massa]

When started either via launcher or cli update-manager downloads informations from sources and crashes when the operation is terminated, just before showing the package list.

This happens since the update from update-manager version 1:22.04.18 to 1:22.04.19, done yesterday.

Updates via apt or apt-get cli commands work regularly.

Description: Ubuntu 22.04.4 LTS
Release: 22.04

Package: update-manager 1:22.04.19

Expected behaviour: after sources' interrogation, the software should either tell no updates are available or show pending updates.

Observed behaviour: the software checks for updates then crashes before showing any results.

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: update-manager 1:22.04.19
ProcVersionSignature: Ubuntu 6.1.0-1035.35-oem 6.1.78
Uname: Linux 6.1.0-1035-oem x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 18 22:02:14 2024
DistributionChannelDescriptor:
 # This is the distribution channel descriptor for the OEM CDs
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-jammy-amd64-20220504-33
InstallationDate: Installed on 2024-01-27 (51 days ago)
InstallationMedia: Ubuntu 22.04 LTS "Jammy Jellyfish" - somerville-jammy-amd64-20220504-33
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: No upgrade log present (probably fresh install)

[Giacomo Massa (jeq0)]

Hi, this is the output of `pro security-status --format=json` as requested:

Unexpected error(s) occurred.
For more details, see the log: /var/log/ubuntu-advantage.log
To file a bug run: ubuntu-bug ubuntu-advantage-tools

I attach the log as text file.