package libjson-c2:i386 0.11-4ubuntu2 failed to install/upgrade: package libjson-c2:i386 is already installed and configured

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ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libjson-c2:i386 0.11-4ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-66.87-generic 4.4.44
Uname: Linux 4.4.0-66-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 600:0:116:132428:2018-01-06 00:16:32.777300834 +0100:2018-01-06 00:16:33.777300834 +0100:/var/crash/libsystemd0:i386.0.crash
 640:0:116:696081:2018-01-08 11:48:46.263581037 +0100:2018-01-08 11:48:47.263581037 +0100:/var/crash/libxau6:i386.0.crash
 644:0:116:0:2018-01-08 11:48:58.686755954 +0100:2018-01-08 11:48:58.686755954 +0100:/var/crash/libxau6:i386.0.upload
 600:0:116:133466:2018-01-06 00:16:31.821298837 +0100:2018-01-06 00:16:32.821298837 +0100:/var/crash/libjson-c2:i386.0.crash
Date: Sat Jan 6 00:16:33 2018
Dependencies:
 gcc-6-base 6.0.1-0ubuntu1
 libc6 2.23-0ubuntu9
 libgcc1 1:6.0.1-0ubuntu1
 multiarch-support 2.23-0ubuntu9
DuplicateSignature:
 package:libjson-c2:i386:0.11-4ubuntu2
 Processing triggers for mime-support (3.59ubuntu1) ...
 dpkg: error processing package libsystemd0:i386 (--configure):
  package libsystemd0:i386 is already installed and configured
ErrorMessage: package libjson-c2:i386 is already installed and configured
InstallationDate: Installed on 2017-03-18 (295 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: i386
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.3
 apt 1.2.24
SourcePackage: dpkg
Title: package libjson-c2:i386 0.11-4ubuntu2 failed to install/upgrade: package libjson-c2:i386 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)