package docbook-xml 4.5-7.3 failed to install/upgrade: package docbook-xml is not ready for configuration cannot configure (current status 'half-installed')

[Errol Jackson]

just trying to update

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: docbook-xml 4.5-7.3
ProcVersionSignature: Ubuntu 4.8.0-56.61~16.04.1-generic 4.8.17
Uname: Linux 4.8.0-56-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.6
AptOrdering:
 less: Install
 docbook-xml: Configure
 libkf5configcore5: Configure
 less: Configure
 NULL: ConfigurePending
Architecture: amd64
Date: Fri Jun 23 00:29:52 2017
DuplicateSignature:
 package:docbook-xml:4.5-7.3
 Processing triggers for mime-support (3.59ubuntu1) ...
 dpkg: error processing package docbook-xml (--configure):
  package docbook-xml is not ready for configuration
ErrorMessage: package docbook-xml is not ready for configuration cannot configure (current status 'half-installed')
InstallationDate: Installed on 2017-06-21 (1 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.20
SourcePackage: docbook-xml
Title: package docbook-xml 4.5-7.3 failed to install/upgrade: package docbook-xml is not ready for configuration cannot configure (current status 'half-installed')
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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