package update-notifier-common 3.168.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Kunal Tyagi]

Automatic detection via apport

Strangely, first time it has prompted a manual report of bug, usually an automatic report is sent.
Any error with the package is not noticeable. However, the system does frequently report such errors

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: update-notifier-common 3.168.4
ProcVersionSignature: Ubuntu 4.4.0-75.96-generic 4.4.59
Uname: Linux 4.4.0-75-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
Date: Wed May 10 16:03:19 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-12-08 (152 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: update-notifier
Title: package update-notifier-common 3.168.4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)