[Bug 2056213] Re: Unable to open Software & Updates

[Launchpad Bug Tracker]

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

** Changed in: software-properties (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/2056213

Title:
  Unable to open Software & Updates

Status in software-properties package in Ubuntu:
  Confirmed

Bug description:
  I receive the error below when trying to open, after update

  software-properties-gtk 
  Traceback (most recent call last):
    File "/usr/bin/software-properties-gtk", line 100, in <module>
      app = SoftwarePropertiesGtk(datadir=options.data_dir, options=options, file=file)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/usr/lib/python3/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 163, in __init__
      SoftwareProperties.__init__(self, options=options, datadir=datadir,
    File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 109, in __init__
      self.backup_sourceslist()
    File "/usr/lib/python3/dist-packages/softwareproperties/SoftwareProperties.py", line 437, in backup_sourceslist
      source_bkp = SourceEntry(line=source.line,file=source.file)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    File "/usr/lib/python3/dist-packages/aptsources/sourceslist.py", line 509, in __init__
      raise ValueError("Classic SourceEntry cannot be written to .sources file")
  ValueError: Classic SourceEntry cannot be written to .sources file

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: software-properties-gtk 0.99.42 [modified: usr/lib/python3/dist-packages/softwareproperties/gtk/DialogMirror.py]
  ProcVersionSignature: Ubuntu 6.8.0-11.11-generic 6.8.0-rc4
  Uname: Linux 6.8.0-11-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.28.0-0ubuntu1
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Mar  5 20:42:48 2024
  InstallationDate: Installed on 2023-09-14 (173 days ago)
  InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: software-properties
  UpgradeStatus: No upgrade log present (probably fresh install)

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