[Bug 1854141] Re: Getting error while upgrading from 16 to 18. An unresolvable problem occurred while calculating the upgrade.

[Ubuntu Foundations Team Bug Bot]

** Tags added: xenial2bionic

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https://bugs.launchpad.net/bugs/1854141

Title:
  Getting error while upgrading from 16 to 18. An unresolvable problem
  occurred while calculating the upgrade.

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

Bug description:
  Getting error when I run this command. "sudo do-release-upgrade".

  
  Reading state information... Done

  Calculating the changes

  Calculating the changes

  Could not calculate the upgrade

  An unresolvable problem occurred while calculating the upgrade.

  If none of this applies, then please report this bug using the 
  command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal.If 
  you want to investigate this yourself the log files in 
  '/var/log/dist-upgrade' will contain details about the upgrade. 
  Specifically, look at 'main.log' and 'apt.log'. 

  
  Restoring original system state

  Aborting
  Reading package lists... Done    
  Building dependency tree          
  Reading state information... Done

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.29
  ProcVersionSignature: Ubuntu 4.15.0-70.79~16.04.1-generic 4.15.18
  Uname: Linux 4.15.0-70-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.21
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: Unity
  Date: Wed Nov 27 13:51:11 2019
  InstallationDate: Installed on 2017-06-30 (879 days ago)
  InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-11-27 (0 days ago)

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