Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeView.py", line 217, in run
    res = pm.do_install(self.writefd)
SystemError: E:Internal error, packages left unconfigured. ubuntu-desktop:amd64

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/ubuntu-release-upgrader/do-partial-upgrade", line 92, in <module>
    controller.doPartialUpgrade()
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1845, in doPartialUpgrade
    if not self.doDistUpgrade():
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeController.py", line 1136, in doDistUpgrade
    res = self.cache.commit(fprogress,iprogress)
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeCache.py", line 264, in commit
    apt.Cache.commit(self, fprogress, iprogress)
  File "/usr/lib/python3/dist-packages/apt/cache.py", line 501, in commit
    res = self.install_archives(pm, install_progress)
  File "/usr/lib/python3/dist-packages/apt/cache.py", line 465, in install_archives
    res = install_progress.run(pm)
  File "/usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeView.py", line 222, in run
    os._exit(pm.ResultFailed)
AttributeError: 'apt_pkg.PackageManager' object has no attribute 'ResultFailed'