[Bug 1894451] [NEW] unresolved issue while calculating upgrade to 20.04

[Dibora Haile Gebreyohannes]

Public bug reported:

The upgrade to 20.04 crashes without any additional information just
print out "An unresolvable problem occurred while calculating the
upgrade."

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 5.4.0-45.49~18.04.2-generic 5.4.55
Uname: Linux 5.4.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep  7 01:06:34 2020
InstallationDate: Installed on 2020-03-04 (186 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-09-06 (0 days ago)
VarLogDistupgradeTermlog:
 
mtime.conffile..etc.update-manager.release-upgrades: 2020-09-07T00:14:42.117615

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


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

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https://bugs.launchpad.net/bugs/1894451

Title:
  unresolved issue while calculating upgrade to 20.04

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

Bug description:
  The upgrade to 20.04 crashes without any additional information just
  print out "An unresolvable problem occurred while calculating the
  upgrade."

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.38
  ProcVersionSignature: Ubuntu 5.4.0-45.49~18.04.2-generic 5.4.55
  Uname: Linux 5.4.0-45-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.17
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Sep  7 01:06:34 2020
  InstallationDate: Installed on 2020-03-04 (186 days ago)
  InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-09-06 (0 days ago)
  VarLogDistupgradeTermlog:
   
  mtime.conffile..etc.update-manager.release-upgrades: 2020-09-07T00:14:42.117615

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