[Bug 1802245] Re: difficult in upgrading ubuntu to 18.04 lts

[Ubuntu Foundations Team Bug Bot]

** Tags added: xenial2bionic

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https://bugs.launchpad.net/bugs/1802245

Title:
  difficult in upgrading ubuntu to 18.04 lts

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

Bug description:
  Its an production server, Its mainly act as webserver for few sites. I
  am having issue in letencrypt once i try to install ssl certificate
  system behave strangly, so we thought of upgrade the system to latest
  ubuntu.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.25
  ProcVersionSignature: Ubuntu 4.4.0-28.47-generic 4.4.13
  Uname: Linux 4.4.0-28-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  Date: Thu Nov  8 12:50:08 2018
  InstallationDate: Installed on 2014-04-18 (1664 days ago)
  InstallationMedia:
   
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2018-11-08 (0 days ago)
  VarLogDistupgradeAptclonesystemstate.tar.gz:
   Error: command ['pkexec', 'cat', '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'] failed with exit code 127: polkit-agent-helper-1: pam_authenticate failed: Authentication failure
   Error executing command as another user: Not authorized
   
   This incident has been reported.

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