package libbrlapi0.6:amd64 5.3.1-2ubuntu2.1 failed to install/upgrade: package libbrlapi0.6:amd64 is already installed and configured

[relaxtheo]

system report error, but I don't know what it is

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: libbrlapi0.6:amd64 5.3.1-2ubuntu2.1
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 12 17:32:16 2017
Dependencies:
 gcc-6-base 6.0.1-0ubuntu1
 libc6 2.23-0ubuntu7
 libgcc1 1:6.0.1-0ubuntu1
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
DuplicateSignature:
 package:libbrlapi0.6:amd64:5.3.1-2ubuntu2.1
 Unpacking thunderbird-locale-en-gb (1:45.8.0+build1-0ubuntu0.16.04.1) ...
 dpkg: error processing package libbrlapi0.6:amd64 (--configure):
  package libbrlapi0.6:amd64 is already installed and configured
ErrorMessage: package libbrlapi0.6:amd64 is already installed and configured
InstallationDate: Installed on 2017-04-07 (4 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.19
SourcePackage: dpkg
Title: package libbrlapi0.6:amd64 5.3.1-2ubuntu2.1 failed to install/upgrade: package libbrlapi0.6:amd64 is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)