This upgrade failure shows that your debconf frontend is in an inconsistent state when called by ucf from the nfs-utils package.
** Package changed: nfs-utils (Ubuntu) => debconf (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to debconf in Ubuntu. https://bugs.launchpad.net/bugs/1521884 Title: package nfs-common 1:1.2.8-6ubuntu1.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128 Status in debconf package in Ubuntu: New Bug description: This error occurs after updating ProblemType: Package DistroRelease: Ubuntu 14.04 Package: nfs-common 1:1.2.8-6ubuntu1.2 ProcVersionSignature: Ubuntu 3.19.0-37.42~14.04.1-generic 3.19.8-ckt9 Uname: Linux 3.19.0-37-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 Date: Wed Dec 2 10:30:56 2015 DuplicateSignature: package:nfs-common:1:1.2.8-6ubuntu1.2:subprocess installed post-installation script returned error exit status 128 ErrorMessage: subprocess installed post-installation script returned error exit status 128 InstallationDate: Installed on 2015-09-27 (65 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) RelatedPackageVersions: dpkg 1.17.5ubuntu5.5 apt 1.0.1ubuntu2.10 SourcePackage: nfs-utils Title: package nfs-common 1:1.2.8-6ubuntu1.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 128 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/debconf/+bug/1521884/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp