package python-dnspython 1.12.0-1 failed to install/upgrade: package python-dnspython is already installed and configured

[Leandro Santos]

after change to pt-BR language system apper this error

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: python-dnspython 1.12.0-1
ProcVersionSignature: Ubuntu 4.8.0-36.36~16.04.1-generic 4.8.11
Uname: Linux 4.8.0-36-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.6
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 600:0:116:402570:2017-06-20 02:10:11.803179740 -0300:2017-06-20 02:10:12.803179740 -0300:/var/crash/python-ldb.0.crash
 600:0:116:402591:2017-06-20 02:10:11.651179075 -0300:2017-06-20 02:10:12.651179075 -0300:/var/crash/python-crypto.0.crash
 600:0:116:402579:2017-06-20 02:10:11.563178539 -0300:2017-06-20 02:10:12.563178539 -0300:/var/crash/python-dnspython.0.crash
Date: Tue Jun 20 02:10:12 2017
Dependencies:

DuplicateSignature:
 package:python-dnspython:1.12.0-1
 Processing triggers for doc-base (0.10.7) ...
 Processando 1 adicionou arquivo doc-base
 dpkg: error processing package python-dnspython (--configure):
  package python-dnspython is already installed and configured
ErrorMessage: package python-dnspython is already installed and configured
InstallationDate: Installed on 2017-06-20 (0 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: dpkg
Title: package python-dnspython 1.12.0-1 failed to install/upgrade: package python-dnspython is already installed and configured
UpgradeStatus: No upgrade log present (probably fresh install)