[Bug 1901354] [NEW] when I try to upgrade from 18.04 to 20.04.1.

[Mirshodjon]

Public bug reported:

when I try to upgrade from 18.04 to 20.04.1. always it is showing this
errot. I have tried deleting all ppa files but it is not upgrading

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 5.4.0-52.57~18.04.1-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 25 03:01:28 2020
InstallationDate: Installed on 2020-04-25 (181 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-10-24 (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/1901354

Title:
  when I try to upgrade from 18.04 to 20.04.1.

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

Bug description:
  when I try to upgrade from 18.04 to 20.04.1. always it is showing this
  errot. I have tried deleting all ppa files but it is not upgrading

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubuntu-release-upgrader-core 1:18.04.38
  ProcVersionSignature: Ubuntu 5.4.0-52.57~18.04.1-generic 5.4.65
  Uname: Linux 5.4.0-52-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.17
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Oct 25 03:01:28 2020
  InstallationDate: Installed on 2020-04-25 (181 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to bionic on 2020-10-24 (0 days ago)
  VarLogDistupgradeTermlog:

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