menulibre crashed with AttributeError in model_to_xml_menus(): 'NoneType' object has no attribute 'iter_n_children'

[Norbert Cserpnyák]

ProblemType: Crash
DistroRelease: Ubuntu 22.04
Package: menulibre 2.2.2-1
ProcVersionSignature: Ubuntu 5.15.0-23.23-generic 5.15.27
Uname: Linux 5.15.0-23-generic x86_64
ApportVersion: 2.20.11-0ubuntu79
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sun Mar 27 14:09:06 2022
ExecutablePath: /usr/bin/menulibre
InterpreterPath: /usr/bin/python3.10
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/menulibre
Python3Details: /usr/bin/python3.10, Python 3.10.3, python3-minimal, 3.10.1-0ubuntu2
PythonArgs: ['/usr/bin/menulibre']
PythonDetails: N/A
SourcePackage: menulibre
Title: menulibre crashed with AttributeError in model_to_xml_menus(): 'NoneType' object has no attribute 'iter_n_children'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo