[Bug 1991575] [NEW] while upgrading to 22.04 it complains of "unrecoverable error"

[cygnus]

Public bug reported:

1. lsb_release -rd
Description:	Ubuntu 20.04.5 LTS
Release:	20.04

2.

3. I expected it to upgrade to 22.04.

4. Instead it complains that an unrecoverable error occurred.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: ubuntu-release-upgrader-core 1:20.04.39
ProcVersionSignature: Ubuntu 5.15.0-48.54~20.04.1-generic 5.15.53
Uname: Linux 5.15.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Tue Oct  4 00:01:48 2022
InstallationDate: Installed on 2020-08-11 (783 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to focal on 2022-10-03 (0 days ago)

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade focal

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https://bugs.launchpad.net/bugs/1991575

Title:
  while upgrading to 22.04 it complains of "unrecoverable error"

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  1. lsb_release -rd
  Description:	Ubuntu 20.04.5 LTS
  Release:	20.04

  2.

  3. I expected it to upgrade to 22.04.

  4. Instead it complains that an unrecoverable error occurred.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubuntu-release-upgrader-core 1:20.04.39
  ProcVersionSignature: Ubuntu 5.15.0-48.54~20.04.1-generic 5.15.53
  Uname: Linux 5.15.0-48-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.24
  Architecture: amd64
  CasperMD5CheckResult: skip
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Oct  4 00:01:48 2022
  InstallationDate: Installed on 2020-08-11 (783 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to focal on 2022-10-03 (0 days ago)

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