package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32

[Adriaan-walpot]

Had to re-recreate the GRUB installer after Windows overwrote the original version.
So I ended up with 2 GRUB partitions.

ProblemType: Package
DistroRelease: Ubuntu 20.10
Package: grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4
ProcVersionSignature: Ubuntu 5.8.0-41.46-generic 5.8.18
Uname: Linux 5.8.0-41-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Feb 25 15:48:36 2021
DuplicateSignature:
 package:grub-efi-amd64-signed:1.155.4+2.04-1ubuntu35.4
 Setting up grub-efi-amd64-signed (1.155.4+2.04-1ubuntu35.4) ...
 mount: /var/lib/grub/esp: special device /, does not exist.
 dpkg: error processing package grub-efi-amd64-signed (--configure):
  installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32
InstallationDate: Installed on 2020-12-02 (84 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-0ubuntu1
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.20.5ubuntu2
 apt 2.1.10ubuntu0.2
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.155.4+2.04-1ubuntu35.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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