package libproxy-tools 0.4.11-5ubuntu1 failed to install/upgrade: package libproxy-tools is already installed and configured

[MD Rijwan]

just giving me pop up message every time an unexpected error detected with program. Its happened after installing vlc media player from synaptics software.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libproxy-tools 0.4.11-5ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-64.85-generic 4.4.44
Uname: Linux 4.4.0-64-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
Date: Wed Mar 1 21:01:07 2017
DuplicateSignature:
 package:libproxy-tools:0.4.11-5ubuntu1
 Setting up libsdl-image1.2:amd64 (1.2.12-5build2) ...
 dpkg: error processing package libproxy-tools (--configure):
  package libproxy-tools is already installed and configured
ErrorMessage: package libproxy-tools is already installed and configured
InstallationDate: Installed on 2017-02-05 (23 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: dpkg
Title: package libproxy-tools 0.4.11-5ubuntu1 failed to install/upgrade: package libproxy-tools is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)