I removed both language-pack-en and language-pack-en-base and then reinstalled both. This resolved the issue.
-- You received this bug notification because you are a member of Translators Packages, which is subscribed to language-pack-en-base in Ubuntu. https://bugs.launchpad.net/bugs/1782986 Title: package language-pack-en-base 1:18.04+20180712 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration Status in language-pack-en-base package in Ubuntu: New Bug description: During my latest apt upgrade this package is no longer functional: Do you want to continue? [Y/n] y dpkg: error processing package language-pack-en-base (--configure): package is in a very bad inconsistent state; you should reinstall it before attempting configuration Errors were encountered while processing: language-pack-en-base E: Sub-process /usr/bin/dpkg returned an error code (1) ProblemType: Package DistroRelease: Ubuntu 18.04 Package: language-pack-en-base 1:18.04+20180712 ProcVersionSignature: Ubuntu 4.15.0-29.31-generic 4.15.18 Uname: Linux 4.15.0-29-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 Date: Sat Jul 21 19:58:27 2018 ErrorMessage: package is in a very bad inconsistent state; you should reinstall it before attempting configuration InstallationDate: Installed on 2016-11-27 (602 days ago) InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2) PackageArchitecture: all Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1 PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1 RelatedPackageVersions: dpkg 1.19.0.5ubuntu2 apt 1.6.3 SourcePackage: language-pack-en-base Title: package language-pack-en-base 1:18.04+20180712 failed to install/upgrade: package is in a very bad inconsistent state; you should reinstall it before attempting configuration UpgradeStatus: Upgraded to bionic on 2018-06-11 (41 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/language-pack-en-base/+bug/1782986/+subscriptions -- Mailing list: https://launchpad.net/~translators-packages Post to : translators-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~translators-packages More help : https://help.launchpad.net/ListHelp