package syslog-ng-core 3.25.1-3 failed to install/upgrade: installed syslog-ng-core package post-installation script subprocess returned error exit status 1

[datux]

error while upgrading disttro from 19.10 to 20.04

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: syslog-ng-core 3.25.1-3
ProcVersionSignature: Ubuntu 5.3.0-55.49-generic 5.3.18
Uname: Linux 5.3.0-55-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
CasperMD5CheckResult: skip
Date: Fri May 29 14:57:08 2020
ErrorMessage: installed syslog-ng-core package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2019-11-05 (205 days ago)
InstallationMedia: Ubuntu-Server 19.10 "Eoan Ermine" - Release amd64 (20191017)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: syslog-ng
Title: package syslog-ng-core 3.25.1-3 failed to install/upgrade: installed syslog-ng-core package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to focal on 2020-05-29 (0 days ago)
mtime.conffile..etc.syslog-ng.syslog-ng.conf: 2020-02-27T21:06:21.728741