package libapt-inst2.0:amd64 1.2.18 failed to install/upgrade: package libapt-inst2.0:amd64 is already installed and configured

[Jeremiah Lighthouse]

I was told there was a system error and was asked if I wanted to report it.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libapt-inst2.0:amd64 1.2.18
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
Date: Tue Jan 17 22:49:53 2017
DuplicateSignature:
 package:libapt-inst2.0:amd64:1.2.18
 Processing triggers for mime-support (3.59ubuntu1) ...
 dpkg: error processing package locales (--configure):
  package locales is already installed and configured
ErrorMessage: package libapt-inst2.0:amd64 is already installed and configured
InstallationDate: Installed on 2017-01-18 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.18
SourcePackage: dpkg
Title: package libapt-inst2.0:amd64 1.2.18 failed to install/upgrade: package libapt-inst2.0:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.