package ca-certificates 20180409 failed to install/upgrade: installed ca-certificates package post-installation script subprocess returned error exit status 25

[Jeff]

Upugrading from Xubuntu 17.10 to 18.04.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: ca-certificates 20180409
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
Date: Fri May 18 09:09:13 2018
ErrorMessage: installed ca-certificates package post-installation script subprocess returned error exit status 25
InstallationDate: Installed on 2016-03-04 (804 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
PackageArchitecture: all
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.1
SourcePackage: ca-certificates
Title: package ca-certificates 20180409 failed to install/upgrade: installed ca-certificates package post-installation script subprocess returned error exit status 25
UpgradeStatus: Upgraded to bionic on 2018-05-18 (0 days ago)