package base-files 9.4ubuntu4.7 failed to install/upgrade: package base-files is already installed and configured

[Frédéric]

Crash after using snap for update the OS.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: base-files 9.4ubuntu4.7
ProcVersionSignature: Ubuntu 4.13.0-1028.31-oem 4.13.16
Uname: Linux 4.13.0-1028-oem x86_64
ApportVersion: 2.20.1-0ubuntu2.18
AptdaemonVersion: 1.1.1+bzr982-0ubuntu14
Architecture: amd64
CrashReports: 600:0:118:353920:2018-10-04 17:57:17.112693548 +0200:2018-10-04 17:57:18.112693548 +0200:/var/crash/base-files.0.crash
Date: Thu Oct 4 17:57:18 2018
Dependencies:

DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-osp1-20171027-1
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 2018-09-24 (9 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20171027-10:57
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.26
SourcePackage: dpkg
Title: package base-files 9.4ubuntu4.7 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.