package grub-efi-amd64-signed 1.169+2.04-1ubuntu45 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 32

[Suheyl Z]

while updating packages, it crashes!

ProblemType: PackageDistroRelease: Ubuntu 21.04
Package: grub-efi-amd64-signed 1.169+2.04-1ubuntu45
ProcVersionSignature: Ubuntu 5.11.0-22.23-generic 5.11.21
Uname: Linux 5.11.0-22-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.1
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Wed Jul 21 10:26:54 2021
DuplicateSignature:
 package:grub-efi-amd64-signed:1.169+2.04-1ubuntu45
 Setting up grub-efi-amd64-signed (1.169+2.04-1ubuntu45) ...
 mount: /var/lib/grub/esp: special device /dev/sda2 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
Python3Details: /usr/bin/python3.9, Python 3.9.5, python3-minimal, 3.9.4-1
PythonDetails: /usr/bin/python2.7, Python 2.7.18, python-is-python2, 2.7.18-9
RelatedPackageVersions:
 dpkg 1.20.9ubuntu1
 apt 2.2.4ubuntu0.1SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.169+2.04-1ubuntu45 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)

[Dan Bungert (dbungert)]

Bug reproducer script