[Bug 1945284] [NEW] package grub-efi-amd64 2.04-1ubuntu45 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 127

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Getting this issue for some time now, I am on a fairly new system. When
I open Software Updater, it tells me to run a partial upgrade instead. I
tried installing ZSH and I get the error "grub can't be installed on
nvme01n1p1".

Description:	Ubuntu 21.04
Release:	21.04

grub2:
  Installed: (none)
  Candidate: 2.04-1ubuntu45
  Version table:
     2.04-1ubuntu45 500
        500 http://in.archive.ubuntu.com/ubuntu hirsute/universe amd64 Packages

ProblemType: Package
DistroRelease: Ubuntu 21.04
Package: grub-efi-amd64 2.04-1ubuntu45
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
ApportVersion: 2.20.11-0ubuntu65.3
Architecture: amd64
CasperMD5CheckResult: pass
Date: Sun Sep 26 18:58:16 2021
Df:
 Filesystem     1K-blocks     Used Available Use% Mounted on
 /dev/nvme0n1p7  35862048 12637548  21373108  38% /
 tmpfs             799044     2044    797000   1% /run
 /dev/nvme0n1p1    262144    49880    212264  20% /boot/efi
ErrorMessage: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 127
InstallationDate: Installed on 2021-09-15 (12 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Release amd64 (20210420)
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  2.2.3
SourcePackage: grub2-unsigned
Title: package grub-efi-amd64 2.04-1ubuntu45 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: grub2-unsigned (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-package hirsute need-duplicate-check
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package grub-efi-amd64 2.04-1ubuntu45 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 127
https://bugs.launchpad.net/bugs/1945284
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