package shim-signed 1.34.6+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 5

[Mike]

Immediately subsequent to upgrading from 17.10 artful to 18.04 bionic.

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: shim-signed 1.34.6+13-0ubuntu2
ProcVersionSignature: Ubuntu 4.15.0-15.16-generic 4.15.15
Uname: Linux 4.15.0-15-generic x86_64
NonfreeKernelModules: wl
.proc.sys.kernel.moksbstate_disabled: Error: [Errno 2] No such file or directory: '/proc/sys/kernel/moksbstate_disabled'
ApportVersion: 2.20.9-0ubuntu6
Architecture: amd64
Date: Mon Apr 23 21:52:45 2018
ErrorMessage: installed shim-signed package post-installation script subprocess returned error exit status 5
InstallationDate: Installed on 2015-09-06 (960 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
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
SecureBoot: 22 0 0 0 0
SourcePackage: shim-signed
Title: package shim-signed 1.34.6+13-0ubuntu2 failed to install/upgrade: installed shim-signed package post-installation script subprocess returned error exit status 5
UpgradeStatus: Upgraded to bionic on 2018-04-23 (0 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.