package ubuntu-advantage-tools 27.1~16.04.1 - ModuleNotFoundError: No module named 'uaclient' - maybe dup 1930121

[Kishan Kr Jaiswal]

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#1927348 package ubuntu-advantage-tools 27.0~16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
Incomplete (2 comments) last updated 2021-05-07 view this bug
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#1927905 package ubuntu-advantage-tools 27.0~16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
Confirmed (4 comments) last updated 2021-05-17 view this bug
When i start the system i am getting this error.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: ubuntu-advantage-tools 27.0~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-142.146~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-142-generic x86_64

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: ubuntu-advantage-tools 27.1~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-142.146~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-142-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.30
Architecture: amd64
Date: Wed Jun 30 12:09:50 2021
DpkgHistoryLog:
 Start-Date: 2021-06-30 12:08:45
 Commandline: apt install alien
 Requested-By: kishan (1000)
 Install: autotools-dev:amd64 (20150820.1, automatic), librpmsign3:amd64 (4.12.0.1+dfsg1-3build3, automatic), rpm2cpio:amd64 (4.12.0.1+dfsg1-3build3, automatic), libmail-sendmail-perl:amd64 (0.79.16-1, automatic), librpmbuild3:amd64 (4.12.0.1+dfsg1-3build3, automatic), alien:amd64 (8.95), debugedit:amd64 (4.12.0.1+dfsg1-3build3, automatic), dh-strip-nondeterminism:amd64 (0.015-1, automatic), libfile-stripnondeterminism-perl:amd64 (0.015-1, automatic), librpmio3:amd64 (4.12.0.1+dfsg1-3build3, automatic), po-debconf:amd64 (1.0.19, automatic), rpm-common:amd64 (4.12.0.1+dfsg1-3build3, automatic), rpm:amd64 (4.12.0.1+dfsg1-3build3, automatic), librpm3:amd64 (4.12.0.1+dfsg1-3build3, automatic), debhelper:amd64 (9.20160115ubuntu3, automatic), libsys-hostname-long-perl:amd64 (1.5-1, automatic)
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2020-07-09 (355 days ago)
InstallationMedia: Ubuntu 16.04.6 LTS "Xenial Xerus" - Release amd64 (20190227)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.7
 apt 1.2.35
SourcePackage: ubuntu-advantage-tools
Title: package ubuntu-advantage-tools 27.1~16.04.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Christian Ehrhardt  (paelzer)]

This bug still has the template data that is supposed to be read and updated when filing :-/
But from the log I see this is one of this kind

Setting up ubuntu-advantage-tools (27.1~16.04.1) ...
Traceback (most recent call last):
  File "<string>", line 2, in <module>
ModuleNotFoundError: No module named 'uaclient'
dpkg: error processing package ubuntu-advantage-tools (--configure):
 subprocess installed post-installation script returned error exit status 1

I think it is time to dup them together to find the (hopefully common) root cause to those

[Christian Ehrhardt  (paelzer)]

Chances are (https://bugs.launchpad.net/ubuntu/+source/ubuntu-advantage-tools/+bug/1930121/comments/3) that this is due to a non-default python on the system.

If you could check and report your python setup that could help.
If you have a non standard python please make this a duplicate to bug 1930121 and then chime-in/discuss there for a hopefully common solution.

[Chad Smith (chad.smith)]

Thanks Christian for fielding this bug and Kishan for filing it. I've marked incomplete as we are looking for Kishan's confirmation that python on this images/system was installed in a non-standard/custom location. We only expect this type of error if python3 is a custom-install instead of from the python3* debpackages shipped on all Canonical official cloud-images.

If you get a chance to confirm the following either set this bug back to "New" status above or click "mark as duplicate" for bug 1930121 if you confirm it as a non-standard python3 install.
 - Whether the default python3 was manually built and installed in a custom location
 - which python
 - python3 --version
 - dpkg -l | grep python3

[Chad Smith (chad.smith)]

bug #1927348 turned out to be a duplicate too, removing the locally installed version of python3 got that system working.

[Andrew Dalcher (adalcher)]

This is for sure caused by the python3 installation. I get the same issue on my machine with a local Python 3.9 installation, which I needed since Ubuntu 16.04 only gets 3.5 from aptitude.

> which python
/usr/bin/python
> which python3
/usr/local/bin/python3
> python3 --version
Python 3.9.1
> dpkg -l | grep python
See attached grep.txt

[Launchpad Janitor (janitor)]

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

[Grant Orndorff (orndorffgrant)]

I'm going to mark this 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.