updating ubuntu 16.04 to 18.04 failed

[Muhammad Gul]

installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: ubuntu-advantage-tools 27.2.2~16.04.1
ProcVersionSignature: Ubuntu 4.4.0-210.242-generic 4.4.262
Uname: Linux 4.4.0-210-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.30
Architecture: amd64
Date: Sat Sep 25 12:43:07 2021
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-03-23 (2377 days ago)
InstallationMedia:

RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.7
 apt 1.2.35
SourcePackage: ubuntu-advantage-tools
Title: package ubuntu-advantage-tools 27.2.2~16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2021-09-25 (0 days ago)

[Muhammad Gul (mgul1985)]

I was first trying to install ubuntu18.04 via terminal but it didn't work as you see the attach files. Second time i used GUI, but it also fails and threw the error
"installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1"

[Lucas Albuquerque Medeiros de Moura (lamoura)]

Hi Muhammad, just to double check something, when you run:

$ which python3

What is the output of that command ?

[Muhammad Gul (mgul1985)]

Dear,

I did some attempts and now it installed.
Although it's running but it has the Kernel Modules Failed issue, which i will describe in a separate thread.

Thanks,
Muhammad

$which python3
/usr/bin/python3

[Launchpad Janitor (janitor)]

[Expired for ubuntu-advantage-tools (Ubuntu) because there has been no activity for 60 days.]