[Bug 1797039] Re: package grub-pc 2.02-2ubuntu8.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 128

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** Tags removed: need-duplicate-check

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Title:
  package grub-pc 2.02-2ubuntu8.4 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 128

Status in grub2 package in Ubuntu:
  New

Bug description:
  trying to use virtual box but it is not working

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-pc 2.02-2ubuntu8.4
  ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
  Uname: Linux 4.15.0-36-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  Date: Wed Oct 10 10:47:23 2018
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 128
  InstallationDate: Installed on 2018-10-10 (0 days ago)
  InstallationMedia: Lubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=da995e9a-cef6-484f-b6e3-2af9b21c5992 ro quiet splash vt.handoff=1
  Python3Details: /usr/bin/python3.6, Python 3.6.6, python3-minimal, 3.6.5-3ubuntu1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu2
   apt  1.6.3ubuntu0.1
  SourcePackage: grub2
  Title: package grub-pc 2.02-2ubuntu8.4 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 128
  UpgradeStatus: No upgrade log present (probably fresh install)

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