package redmine 3.2.1-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 7

[Frederico Lima]

When I was updating from Ubuntu 15.10 to 16.04, this error occurred while the installation was running.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: redmine 3.2.1-2
ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5
Uname: Linux 4.2.0-35-generic x86_64
NonfreeKernelModules: vboxpci vboxnetadp vboxnetflt vboxdrv
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Fri Apr 22 15:12:30 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 7
InstallationDate: Installed on 2015-12-02 (141 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: redmine
Title: package redmine 3.2.1-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 7
UpgradeStatus: Upgraded to xenial on 2016-04-22 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Raymond Wan (rwan)]

A slight variation on what happened to me.

I didn't upgrade Redmine, but installed it from scratch on a recently upgraded Ubuntu 16.04 system.

I received the above error message just when I was logging in. The funny thing is, Redmine is running fine. Also, aptitude indicates that it has been successfully installed.

Of course, given this error message, I'm a bit worried about whether there is a problem with the installation that I haven't noticed yet. But so far, I've encountered no problems.