package grub-efi-amd64-signed 1.66.14+2.02~beta2-36ubuntu3.14 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Not sure why I'm here. I attempted to look at the list of changes and features to be implemented by the update to GRUB. Since it's an empty list, I decided that this package doesn't need to be updated at this time.

After the scare I had the last time GRUB came up for upgrade and there were questions about my primary work computer being unable to boot post installation; I concluded that if UBUNTU and/or GRUB are not serious about keeping people informed about what they are doing they do not need me to be a lab rat.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66.14+2.02~beta2-36ubuntu3.14
ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87
Uname: Linux 4.4.0-97-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia wl
ApportVersion: 2.20.1-0ubuntu2.10
Architecture: amd64
Date: Mon Oct 30 09:11:23 2017
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-05-18 (895 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.2
 apt 1.2.24
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66.14+2.02~beta2-36ubuntu3.14 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)