package rsyslog 8.32.0-1ubuntu5 failed to install/upgrade: installed rsyslog package post-installation script subprocess returned error exit status 10

i can't install deb files like google remote desktop,virtual box etc

ProblemType: Package
DistroRelease: Ubuntu 18.10
Package: rsyslog 8.32.0-1ubuntu5
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
Uname: Linux 4.18.0-11-generic x86_64
ApportVersion: 2.20.10-0ubuntu13
Architecture: amd64
Date: Fri Oct 26 12:47:54 2018
DuplicateSignature:
 package:rsyslog:8.32.0-1ubuntu5
 Setting up gconf2-common (3.2.6-4.1ubuntu2) ...
 Fontconfig warning: "/etc/fonts/conf.avail/53-monospace-lcd-filter.conf", line 10: Having multiple values in <test> isn't supported and may not work as expected
 dpkg: error processing package gconf2-common (--configure):
  installed gconf2-common package post-installation script subprocess returned error exit status 10
ErrorMessage: installed rsyslog package post-installation script subprocess returned error exit status 10
InstallationDate: Installed on 2018-08-01 (85 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.10
PythonDetails: /usr/bin/python2.7, Python 2.7.15+, python-minimal, 2.7.15-3
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu5
 apt 1.7.0
SourcePackage: rsyslog
Title: package rsyslog 8.32.0-1ubuntu5 failed to install/upgrade: installed rsyslog package post-installation script subprocess returned error exit status 10
UpgradeStatus: Upgraded to cosmic on 2018-10-26 (0 days ago)