package unattended-upgrades 2.0 failed to install/upgrade: installed unattended-upgrades package post-installation script subprocess returned error exit status 128

[Matheus Reich]

The installation process was stuck, and it never finished, so after forcing a restart and login back in, the error was presented and it allow me to send it to you guys, so that it is fixed.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: unattended-upgrades 2.0
ProcVersionSignature: Ubuntu 5.4.0-18.22-generic 5.4.24
Uname: Linux 5.4.0-18-generic x86_64
.var.log.unattended-upgrades.unattended-upgrades.log:

ApportVersion: 2.20.11-0ubuntu20
Architecture: amd64
Date: Sun Mar 15 11:45:51 2020
ErrorMessage: installed unattended-upgrades package post-installation script subprocess returned error exit status 128
InstallationDate: Installed on 2020-02-18 (25 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
PackageArchitecture: all
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu2
 apt 2.0.0
SourcePackage: unattended-upgrades
Title: package unattended-upgrades 2.0 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)
modified.conffile..etc.apt.apt.conf.d.10periodic:
 APT::Periodic::Update-Package-Lists "1";
 APT::Periodic::Download-Upgradeable-Packages "0";
 APT::Periodic::AutocleanInterval "0";
 APT::Periodic::Unattended-Upgrade "0";
mtime.conffile..etc.apt.apt.conf.d.10periodic: 2020-03-03T15:51:02.219809