package shim-signed 1.33.1~16.04.1+13-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Shatad K. Purohit]

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ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: shim-signed 1.33.1~16.04.1+13-0ubuntu2
ProcVersionSignature: Ubuntu 4.4.0-140.166-generic 4.4.162
Uname: Linux 4.4.0-140-generic x86_64
.proc.sys.kernel.moksbstate_disabled: 0
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Thu Dec 13 23:13:16 2018
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2018-12-12 (1 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.5
 apt 1.2.29
SecureBoot: 6 0 0 0 1
SourcePackage: shim-signed
Title: package shim-signed 1.33.1~16.04.1+13-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Steve Langasek (vorlon)]

This is bug #1679784, which was fixed in software-properties 0.96.20.7 in April 2017. You are installing from obsolete media; please use the latest point release of Ubuntu 16.04 for installation if you are going to install 16.04, since many bugs have been fixed since July of 2016.