[Bug 1874500] [NEW] Error upgrading from 18.04 to 20.04

[dpcat237]

Public bug reported:

>From main.log:
Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.

I tried to fix errors with sudo apt --fix-broken install but are not any
error. This is also empty dpkg --get-selections | grep hold.

I attached logs. What else I can do to fix this upgrade issue?

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.37
Uname: Linux 4.20.10-042010-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 23 20:19:10 2020
InstallationDate: Installed on 2019-01-17 (461 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-04-23 (0 days ago)
VarLogDistupgradeTermlog:

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


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

** Attachment added: "logs"
   https://bugs.launchpad.net/bugs/1874500/+attachment/5358556/+files/logs.zip

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https://bugs.launchpad.net/bugs/1874500

Title:
  Error upgrading from 18.04 to 20.04

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

Bug description:
  From main.log:
  Dist-upgrade failed: 'E:Unable to correct problems, you have held broken packages.

  I tried to fix errors with sudo apt --fix-broken install but are not
  any error. This is also empty dpkg --get-selections | grep hold.

  I attached logs. What else I can do to fix this upgrade issue?

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.37
  Uname: Linux 4.20.10-042010-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Apr 23 20:19:10 2020
  InstallationDate: Installed on 2019-01-17 (461 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-04-23 (0 days ago)
  VarLogDistupgradeTermlog:

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