package gconf2 3.2.6-3ubuntu6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Tapan Roy]

Whenever I run apt-get install (for any binary) in command line prompt, - I get the follwing error, please help me - what is the fix?

update-gconf-defaults: error: Destination directory does not exist.
dpkg: error processing package gconf2 (--configure):
 subprocess installed post-installation script returned error exit status 2
Errors were encountered while processing:
 gconf2
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@LP-5CD9156H04:/home/tapan#

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: gconf2 3.2.6-3ubuntu6
ProcVersionSignature: Ubuntu 4.4.0-193.224-generic 4.4.236
Uname: Linux 4.4.0-193-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.26
AptOrdering:
 gconf2: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Fri Apr 23 19:49:20 2021
DpkgHistoryLog:
 Start-Date: 2021-04-23 19:49:19
 Commandline: apt-get install build-essential libgl1-mesa-dev
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2019-05-09 (715 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.6
 apt 1.2.32ubuntu0.1
SourcePackage: gconf
Title: package gconf2 3.2.6-3ubuntu6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)