distupgrade 'ConfigParser' object has no attribute 'readfp'

[Gerald Quintana]

Running on Noble, after running apt dist-upgrade, in the recovery menu, run dpkg mode which in turn runs

python3 /usr/lib/python3/dist-packages/DistUpgrade/dist-upgrade.py --partial --frontend DistUpgradeViewText --datadir /usr/share/ubuntu-release-upgrader

2024-04-03 20:10:04,192 INFO Using config files '['/usr/share/ubuntu-release-upgrader/DistUpgrade.cfg', '/etc/update-manager/release-upgrades.d/ubuntu-advantage-upgrades.cfg']'
2024-04-03 20:10:04,192 INFO uname information: 'Linux huahine 6.8.0-11-generic #11-Ubuntu SMP PREEMPT_DYNAMIC Wed Feb 14 00:29:05 UTC 2024 x86_64'
2024-04-03 20:10:04,367 INFO apt version: '2.7.14'
2024-04-03 20:10:04,368 INFO python version: '3.12.2 (main, Mar 19 2024, 00:13:04) [GCC 13.2.0]'
2024-04-03 20:10:04,369 INFO release-upgrader version '24.04.11' started
2024-04-03 20:10:04,371 INFO locale: 'fr_FR' 'UTF-8'
2024-04-03 20:10:04,392 INFO screen could not be run
2024-04-03 20:10:04,405 DEBUG Using 'DistUpgradeViewText' view
2024-04-03 20:10:04,423 DEBUG enable dpkg --force-overwrite
2024-04-03 20:10:04,463 DEBUG lsb-release: 'noble'
2024-04-03 20:10:04,464 DEBUG _pythonSymlinkCheck run
2024-04-03 20:10:04,468 ERROR not handled exception:
Traceback (most recent call last):

  File "/usr/lib/python3/dist-packages/DistUpgrade/dist-upgrade.py", line 8, in <module>
    sys.exit(main())
             ^^^^^^

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeMain.py", line 233, in main
    if not app.doPartialUpgrade():
           ^^^^^^^^^^^^^^^^^^^^^^

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 2609, in doPartialUpgrade
    self.prepare()

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 465, in prepare
    if not self._pythonSymlinkCheck():
           ^^^^^^^^^^^^^^^^^^^^^^^^^^

  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 415, in _pythonSymlinkCheck
    config.readfp(f)
    ^^^^^^^^^^^^^

AttributeError: 'ConfigParser' object has no attribute 'readfp'. Did you mean: 'read'?

2024-04-03 20:10:04,469 DEBUG running apport_crash()

python3-distupgrade 1:24.04.11

[Launchpad Janitor (janitor)]

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

[Churchill Lee (feliciousx)]

Facing this error after an upgrade. Is there a way to revert an upgrade?

[Mohamed Anwer (mohammed-ahmed-anwer)]

I opened this file "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py" in text editor and modified the "_pythonSymlinkCheck" function to return "True" and re-ran dpkg again and it worked!