package unattended-upgrades 2.3ubuntu0.1 failed to install/upgrade: installed unattended-upgrades package post-installation script subprocess returned error exit status 128

[Zakaria Ibrahim]

the system automatically prompted to send the bug to developers while it was installing updates.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: unattended-upgrades 2.3ubuntu0.1
ProcVersionSignature: Ubuntu 5.8.0-38.43~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-38-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.14
Architecture: amd64
CasperMD5CheckResult: skip
Date: Tue Jan 19 11:25:29 2021
ErrorMessage: installed unattended-upgrades package post-installation script subprocess returned error exit status 128
InstallationDate: Installed on 2021-01-15 (3 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
PackageArchitecture: all
Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.2
SourcePackage: unattended-upgrades
Title: package unattended-upgrades 2.3ubuntu0.1 failed to install/upgrade: installed unattended-upgrades package post-installation script subprocess returned error exit status 128
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.