[Bug 1854545] Re: package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Vivien GUEANT]

*** This bug is a duplicate of bug 1855574 ***
    https://bugs.launchpad.net/bugs/1855574

** This bug has been marked a duplicate of bug 1855574
   grub-efi-amd64-signed (1.93.15+2.02-2ubuntu8.14) failed to upgrade, system unbootable

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Title:
  package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 failed to
  install/upgrade: installed grub-efi-amd64-signed package post-
  installation script subprocess returned error exit status 1

Status in grub2-signed package in Ubuntu:
  Confirmed

Bug description:
  during upgrade the system reported this issue

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13
  ProcVersionSignature: Ubuntu 4.4.0-169.198-generic 4.4.197
  Uname: Linux 4.4.0-169-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.9
  Architecture: amd64
  Date: Fri Nov 29 18:52:23 2019
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2019-11-29 (0 days ago)
  InstallationMedia: Ubuntu 14.04.5 LTS "Trusty Tahr" - Release amd64 (20160803)
  Python3Details: /usr/bin/python3.6, Python 3.6.9, python3-minimal, 3.6.7-1~18.04
  PythonDetails: /usr/bin/python2.7, Python 2.7.15+, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2.3
   apt  1.6.12
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.14+2.02-2ubuntu8.13 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2019-11-29 (0 days ago)

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