package base-files 9.4ubuntu4.6 failed to install/upgrade: package base-files is already installed and configured

[mimistris dimitris]

fail to install updates

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: base-files 9.4ubuntu4.6
ProcVersionSignature: Ubuntu 4.4.0-127.153-generic 4.4.128
Uname: Linux 4.4.0-127-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.15
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports:
 640:1000:116:14383619:2018-05-25 00:16:54.200759887 +0300:2018-05-25 00:16:55.200759887 +0300:/var/crash/_usr_bin_gnome-software.1000.crash
 600:0:116:195265:2018-05-25 00:16:56.092823982 +0300:2018-05-25 00:16:57.092823982 +0300:/var/crash/base-files.0.crash
Date: Fri May 25 00:16:56 2018
Dependencies:

DpkgTerminalLog:
 dpkg: error processing package base-files (--configure):
  package base-files is already installed and configured
ErrorMessage: package base-files is already installed and configured
InstallationDate: Installed on 2017-01-22 (487 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.3
 apt 1.2.24
SourcePackage: dpkg
Title: package base-files 9.4ubuntu4.6 failed to install/upgrade: package base-files 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.