[Bug 1807543] Re: package grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Apport retracing service]

** Tags removed: need-duplicate-check

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Title:
  package grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9 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:
  New

Bug description:
  Don't know why I'm getting this error

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9
  ProcVersionSignature: Ubuntu 4.15.0-42.45-generic 4.15.18
  Uname: Linux 4.15.0-42-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  AptOrdering:
   cups:amd64: Install
   NULL: ConfigurePending
  Architecture: amd64
  Date: Sat Dec  8 20:07:13 2018
  ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  Python3Details: /usr/bin/python3.6, Python 3.6.7, python3-minimal, 3.6.7-1~18.04
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2.1
   apt  1.6.6
  SourcePackage: grub2-signed
  Title: package grub-efi-amd64-signed 1.93.10+2.02-2ubuntu8.9 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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