[Bug 1889704] Re: package grub-efi-amd64-signed 1.66.26+2.02~beta2-36ubuntu3.26 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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https://bugs.launchpad.net/bugs/1889704

Title:
  package grub-efi-amd64-signed 1.66.26+2.02~beta2-36ubuntu3.26 failed
  to install/upgrade: subprocess installed post-installation script
  returned error exit status 1

Status in grub2-signed package in Ubuntu:
  New

Bug description:
  ??

  ProblemType: Package
  DistroRelease: Ubuntu 16.04
  Package: grub-efi-amd64-signed 1.66.26+2.02~beta2-36ubuntu3.26
  ProcVersionSignature: Ubuntu 4.4.0-186.216-lowlatency 4.4.228
  Uname: Linux 4.4.0-186-lowlatency x86_64
  ApportVersion: 2.20.1-0ubuntu2.23
  Architecture: amd64
  Date: Thu Jul 30 21:02:20 2020
  ErrorMessage: subprocess installed post-installation script returned error exit status 1
  InstallationDate: Installed on 2016-06-13 (1509 days ago)
  InstallationMedia: Ubuntu-Studio 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  RelatedPackageVersions:
   dpkg 1.18.4ubuntu1.6
   apt  1.2.32ubuntu0.1
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.66.26+2.02~beta2-36ubuntu3.26 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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