package ubuntu-advantage-tools 27.2.2~18.04.1 failed to install/upgrade: installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1

[Jon Radel]

Doing a dist-upgrade from 18.04 to 20.04:

Errors were encountered while processing:
 ubuntu-advantage-tools
Exception during pm.DoInstall(): E:Sub-process /usr/bin/dpkg returned an error code (1)

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ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: ubuntu-advantage-tools 27.2.2~18.04.1
ProcVersionSignature: Ubuntu 4.15.0-159.167-generic 4.15.18
Uname: Linux 4.15.0-159-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.26
Architecture: amd64
Date: Fri Oct 8 17:59:57 2021
ErrorMessage: installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1
Python3Details: /opt/anaconda3/bin/python3.7, Python 3.7.6, unpackaged
PythonDetails: /opt/anaconda3/bin/python3.7, Python 3.7.6, unpackaged
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.3
 apt 1.6.14
SourcePackage: ubuntu-advantage-tools
Title: package ubuntu-advantage-tools 27.2.2~18.04.1 failed to install/upgrade: installed ubuntu-advantage-tools package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2021-10-08 (0 days ago)

[Grant Orndorff (orndorffgrant)]

Thank you for the bug report!

This appears to be a duplicate of bug 1930121.

For now, the likely quick fix is to set PYTHONPATH=/usr/lib/python3/dist-packages

We will release a proper fix in ubuntu-advantage-tools in a coming release.