[Bug 1922040] [NEW] Upgrading Ubuntu crashes

[Linus Lauer]

Public bug reported:

I tried to upgrade Ubuntu from 18.04 to 20.04 several times and it
crashes with the reason "Could not calculate the upgrade".

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.42
ProcVersionSignature: Ubuntu 5.4.0-70.78~18.04.1-generic 5.4.94
Uname: Linux 5.4.0-70-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.23
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 31 11:44:55 2021
InstallationDate: Installed on 2020-05-28 (306 days ago)
InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2021-03-31 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug bionic dist-upgrade third-party-packages

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https://bugs.launchpad.net/bugs/1922040

Title:
  Upgrading Ubuntu crashes

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

Bug description:
  I tried to upgrade Ubuntu from 18.04 to 20.04 several times and it
  crashes with the reason "Could not calculate the upgrade".

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.42
  ProcVersionSignature: Ubuntu 5.4.0-70.78~18.04.1-generic 5.4.94
  Uname: Linux 5.4.0-70-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.23
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Wed Mar 31 11:44:55 2021
  InstallationDate: Installed on 2020-05-28 (306 days ago)
  InstallationMedia: Ubuntu 18.04.4 LTS "Bionic Beaver" - Release amd64 (20200203.1)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2021-03-31 (0 days ago)
  VarLogDistupgradeTermlog:

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