Error reported during upgrade from 18.04.5 to 20.04.1

[Richard Slator]

During upgrade prompted to raise bug report as result of error
Installed 'linux-image-4.15.0-117-generic' package post-removal script subprocess returned error exit status 1.
Upgrade completed but with warning
Tried Synaptic Package Manager to remove package but raised same error
Tried from command line to remove package but same error

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: dpkg 1.19.7ubuntu3
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 8 12:30:14 2020
InstallationDate: Installed on 2018-01-08 (1003 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: dpkg
UpgradeStatus: No upgrade log present (probably fresh install)

[Richard Slator (ricky1950)]

I am very much a novice to Linux so please keep any explanations or requests as simple as possible