[Bug 1916981] Re: package grub-pc 2.04-1ubuntu26.9 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 127

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** Tags removed: need-duplicate-check

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Title:
  package grub-pc 2.04-1ubuntu26.9 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 127

Status in grub2 package in Ubuntu:
  New

Bug description:
  Auto update bug

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: grub-pc 2.04-1ubuntu26.9
  ProcVersionSignature: Ubuntu 5.8.0-43.49~20.04.1-generic 5.8.18
  Uname: Linux 5.8.0-43-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu27.16
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Fri Feb 26 06:22:14 2021
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 127
  InstallationDate: Installed on 2021-02-11 (14 days ago)
  InstallationMedia: Ubuntu 20.04.2 LTS "Focal Fossa" - Release amd64 (20210204)
  InvalidGrubScript: /etc/default/grub
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.8.0-43-generic root=UUID=20534a56-5f13-414f-9a24-e86b47782945 ro quiet splash acpi_backlight=vendor vt.handoff=7
  Python3Details: /usr/bin/python3.8, Python 3.8.5, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.4
  SourcePackage: grub2
  Title: package grub-pc 2.04-1ubuntu26.9 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 127
  UpgradeStatus: No upgrade log present (probably fresh install)

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