[Bug 1789522] Re: package grub-efi-amd64 2.02-2ubuntu8.3 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1

[Phillip Susi]

*** This bug is a duplicate of bug 1788727 ***
    https://bugs.launchpad.net/bugs/1788727

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1788727, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report.  Please continue to report any other bugs you may
find.

** This bug has been marked a duplicate of bug 1788727
   upgrade crashing due to unsigned kernels

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https://bugs.launchpad.net/bugs/1789522

Title:
  package grub-efi-amd64 2.02-2ubuntu8.3 failed to install/upgrade:
  installed grub-efi-amd64 package post-installation script subprocess
  returned error exit status 1

Status in grub2 package in Ubuntu:
  New

Bug description:
  i can't read the code. it just gave me an error when i tried to update
  to Ubuntu 18,04

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64 2.02-2ubuntu8.3
  ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18
  Uname: Linux 4.15.0-33-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.2
  Architecture: amd64
  Date: Sat Aug 25 01:06:16 2018
  ErrorMessage: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  InstallationDate: Installed on 2017-09-30 (332 days ago)
  InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=729eefdf-9d7e-4bce-a9da-070d7c91d1bc ro quiet splash vt.handoff=1
  Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
  PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.3ubuntu0.1
  SourcePackage: grub2
  Title: package grub-efi-amd64 2.02-2ubuntu8.3 failed to install/upgrade: installed grub-efi-amd64 package post-installation script subprocess returned error exit status 1
  UpgradeStatus: Upgraded to bionic on 2018-08-25 (3 days ago)

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