package libapache2-mod-gnutls 0.8.2-3ubuntu1 failed to install/upgrade: installed libapache2-mod-gnutls package post-installation script subprocess returned error exit status 1

[Jay Lepore]

Trying to upgrade from 16.04 to 18.04 and get stopped with this error.

Reattempts still fail with the following:

Setting up libapache2-mod-gnutls (0.8.2-3ubuntu1) ...
dpkg: error processing package libapache2-mod-gnutls (--configure):
 installed libapache2-mod-gnutls package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 libapache2-mod-gnutls
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: libapache2-mod-gnutls 0.8.2-3ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-193.224-generic 4.4.236
Uname: Linux 4.4.0-193-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.18
Architecture: amd64
Date: Sat Oct 24 09:29:22 2020
ErrorMessage: installed libapache2-mod-gnutls package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2015-09-09 (1871 days ago)
InstallationMedia: Ubuntu-Server 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
Python3Details: /usr/bin/python3.6, Python 3.6.9, python3-minimal, 3.6.7-1~18.04
PythonDetails: /usr/bin/python2.7, Python 2.7.17, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2.3
 apt 1.6.12ubuntu0.1
SourcePackage: mod-gnutls
Title: package libapache2-mod-gnutls 0.8.2-3ubuntu1 failed to install/upgrade: installed libapache2-mod-gnutls package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2020-10-24 (0 days ago)
modified.conffile..etc.apache2.mods-available.gnutls.conf: [deleted]
modified.conffile..etc.apache2.mods-available.gnutls.load: [deleted]
modified.conffile..etc.apache2.sites-available.default-tls.conf: [deleted]

[Jay Lepore (amazon-compumatter)]

I resolved this situation by purging and reinstalling the package

# Remove and reinstall got past it
sudo apt-get remove --auto-remove libapache2-mod-gnutls
sudo apt-get purge libapache2-mod-gnutls

sudo apt-get install libapache2-mod-gnutls