mozo crashed with AttributeError in loadUpdates(): 'TreeSeparator' object has no attribute 'get_desktop_file_path'

[Norbert]

Steps to test:
1. Install Ubuntu MATE 20.04 LTS
2. Launch Main Menu from the terminal with `mozo`
3. Place cursor on any menu item, click *New Separator*
4. Click on just created separator item to remove it with *Delete*

Expected result:

* new separator item was created, user is able to delete it

Actual results:

* new separator item was created, shows the following error output in the terminal after clicking on it and trying to delete it:

$ mozo
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 91, in menuChanged
    self.loadUpdates()
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 102, in loadUpdates
    if iter and items[iter][3].get_desktop_file_path():
AttributeError: 'TreeSeparator' object has no attribute 'get_desktop_file_path'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 91, in menuChanged
    self.loadUpdates()
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 102, in loadUpdates
    if iter and items[iter][3].get_desktop_file_path():
AttributeError: 'TreeSeparator' object has no attribute 'get_desktop_file_path'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 91, in menuChanged
    self.loadUpdates()
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 102, in loadUpdates
    if iter and items[iter][3].get_desktop_file_path():
AttributeError: 'TreeSeparator' object has no attribute 'get_desktop_file_path'
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 91, in menuChanged
    self.loadUpdates()
  File "/usr/lib/python3/dist-packages/Mozo/MainWindow.py", line 102, in loadUpdates
    if iter and items[iter][3].get_desktop_file_path():
AttributeError: 'TreeSeparator' object has no attribute 'get_desktop_file_path'

Note: on next Mozo launch the Separator was removed.

ProblemType: Crash
DistroRelease: Ubuntu 20.04
Package: mozo 1.24.0-1
ProcVersionSignature: Ubuntu 5.4.0-14.17-generic 5.4.18
Uname: Linux 5.4.0-14-generic x86_64
ApportVersion: 2.20.11-0ubuntu16
Architecture: amd64
CrashCounter: 1
CurrentDesktop: MATE
Date: Mon Feb 24 13:37:51 2020
ExecutablePath: /usr/bin/mozo
InstallationDate: Installed on 2020-02-19 (4 days ago)
InstallationMedia: Ubuntu-MATE 20.04 LTS "Focal Fossa" - Alpha amd64 (20200219)
InterpreterPath: /usr/bin/python3.8
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 -OOt /usr/bin/mozo
Python3Details: /usr/bin/python3.8, Python 3.8.2rc1, python3-minimal, 3.8.0-3ubuntu1
PythonArgs: ['/usr/bin/mozo']
PythonDetails: N/A
SourcePackage: mozo
Title: mozo crashed with AttributeError in loadUpdates(): 'TreeSeparator' object has no attribute 'get_desktop_file_path'
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo

[Norbert (nrbrtx)]

Happens on groovy too.

[Norbert (nrbrtx)]

Still happens with 21.10.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Martin Wimpress  (flexiondotorg)]

Fixed via mozo 1.26.1-1 uploaded to Jammy.