package postfixadmin 3.0.2-2 failed to install/upgrade: installed postfixadmin package post-installation script subprocess returned error exit status 1

[Nick Seth-Smith]

upgrading to ubuntu 18.04

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: postfixadmin 3.0.2-2
ProcVersionSignature: Ubuntu 4.4.0-177.207-generic 4.4.214
Uname: Linux 4.4.0-177-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.14
Architecture: amd64
Date: Sat Apr 18 00:12:45 2020
ErrorMessage: installed postfixadmin package post-installation script subprocess returned error exit status 1
PackageArchitecture: all
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 1.6.12
SourcePackage: postfixadmin
Title: package postfixadmin 3.0.2-2 failed to install/upgrade: installed postfixadmin package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2020-04-18 (0 days ago)
modified.conffile..etc.apache2.conf-available.postfixadmin.conf: [deleted]