package grub-efi-amd64-signed 1.85.2+2.02~beta3-4ubuntu7.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Louis Nichols]

Happened during upgrade.

ProblemType: Package
DistroRelease: Ubuntu 17.10
Package: grub-efi-amd64-signed 1.85.2+2.02~beta3-4ubuntu7.2
ProcVersionSignature: Ubuntu 4.13.0-36.40-generic 4.13.13
Uname: Linux 4.13.0-36-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
Date: Sun Mar 4 13:11:08 2018
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-03-02 (731 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Python3Details: /usr/bin/python3.6, Python 3.6.3, python3-minimal, 3.6.3-0ubuntu2
PythonDetails: /usr/bin/python2.7, Python 2.7.14, python-minimal, 2.7.14-2ubuntu1
RelatedPackageVersions:
 dpkg 1.18.24ubuntu1
 apt 1.5.1
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.85.2+2.02~beta3-4ubuntu7.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to artful on 2018-03-04 (0 days ago)

[Launchpad Janitor (janitor)]

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