[Bug 1945284] Re: 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

[Apport retracing service]

** Package changed: ubuntu => grub2-unsigned (Ubuntu)

** Tags removed: need-duplicate-check

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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

Status in grub2-unsigned package in Ubuntu:
  New

Bug description:
  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)

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