package grub-efi-amd64-signed 1.66.20+2.02~beta2-36ubuntu3.20 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Pieter Boekhorst]

problem installing update.

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66.20+2.02~beta2-36ubuntu3.20
ProcVersionSignature: Ubuntu 4.4.0-140.166-generic 4.4.162
Uname: Linux 4.4.0-140-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Tue Dec 18 21:28:55 2018
DuplicateSignature:
 package:grub-efi-amd64-signed:1.66.20+2.02~beta2-36ubuntu3.20
 Setting up grub-efi-amd64-signed (1.66.20+2.02~beta2-36ubuntu3.20) ...
 grub-install: fout: /usr/lib/grub/i386-pc/modinfo.sh bestaat niet; gebruik optie '--target' of '--directory'.
 dpkg: error processing package grub-efi-amd64-signed (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2018-10-31 (48 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.5
 apt 1.2.29
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66.20+2.02~beta2-36ubuntu3.20 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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