[Bug 1898016] Re: package grub-efi-amd64-signed 1.142.6+2.04-1ubuntu26.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255

[Apport retracing service]

** Tags removed: need-duplicate-check

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Title:
  package grub-efi-amd64-signed 1.142.6+2.04-1ubuntu26.4 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 255

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  Package installed but with error

  ProblemType: Package
  DistroRelease: Ubuntu 20.04
  Package: grub-efi-amd64-signed 1.142.6+2.04-1ubuntu26.4
  ProcVersionSignature: Ubuntu 4.15.0-112.113-generic 4.15.18
  Uname: Linux 4.15.0-112-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.9
  Architecture: amd64
  CasperMD5CheckResult: skip
  Date: Thu Oct  1 09:24:08 2020
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
  InstallationDate: Installed on 2018-09-19 (742 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
  Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
  PythonDetails: /usr/bin/python2.7, Python 2.7.18rc1, python-is-python2, 2.7.17-4
  RelatedPackageVersions:
   dpkg 1.19.7ubuntu3
   apt  2.0.2ubuntu0.1
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.142.6+2.04-1ubuntu26.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 255
  UpgradeStatus: Upgraded to focal on 2020-10-01 (0 days ago)

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