package liblightdm-gobject-1-0:amd64 1.18.3-0ubuntu1.1 failed to install/upgrade: package liblightdm-gobject-1-0:amd64 is already installed and configured

[root]

my ubuntu linux report this

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: liblightdm-gobject-1-0:amd64 1.18.3-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.4.0-72.93-generic 4.4.49
Uname: Linux 4.4.0-72-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
Date: Wed Apr 5 23:53:21 2017
DuplicateSignature:
 package:liblightdm-gobject-1-0:amd64:1.18.3-0ubuntu1.1
 Processing triggers for mime-support (3.59ubuntu1) ...
 dpkg: error processing package lightdm (--configure):
  package lightdm is already installed and configured
ErrorMessage: package liblightdm-gobject-1-0:amd64 is already installed and configured
InstallationDate: Installed on 2016-12-09 (118 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: dpkg
Title: package liblightdm-gobject-1-0:amd64 1.18.3-0ubuntu1.1 failed to install/upgrade: package liblightdm-gobject-1-0:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)