package rsyslog 8.2001.0-1ubuntu1.1 failed to install/upgrade: installed rsyslog package post-installation script subprocess returned error exit status 2

it fails to boot at times.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: rsyslog 8.2001.0-1ubuntu1.1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri Aug 21 18:52:12 2020
ErrorMessage: installed rsyslog package post-installation script subprocess returned error exit status 2
InstallationDate: Installed on 2020-08-21 (0 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: rsyslog
Title: package rsyslog 8.2001.0-1ubuntu1.1 failed to install/upgrade: installed rsyslog package post-installation script subprocess returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)