package openssh-server 1:7.2p2-4ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Tomas Cassidy]

This is a crash report submitted from cli for bug 1579978

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: openssh-server 1:7.2p2-4ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-22.39-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
Date: Wed May 11 09:42:48 2016
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2013-08-11 (1003 days ago)
InstallationMedia: Ubuntu-Server 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1
 apt 1.2.10ubuntu1
SourcePackage: openssh
Title: package openssh-server 1:7.2p2-4ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to xenial on 2016-05-05 (5 days ago)

[Robie Basak (racb)]

Thank you for the crash report. I'll mark this as a duplicate as we can treat it as a single issue.