[Bug 1775859] Re: package grub-efi-amd64 2.02-2ubuntu8 failed to install/upgrade: instalado grub-efi-amd64 paquete post-installation guión el subproceso devolvió un error con estado de salida 127

[Phillip Susi]

You have modified your /etc/default/grub file and have some invalid
extra space on this line:

GRUB_DEFAULT=   2


** Changed in: grub2 (Ubuntu)
       Status: New => Invalid

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Title:
  package grub-efi-amd64 2.02-2ubuntu8 failed to install/upgrade:
  instalado grub-efi-amd64 paquete post-installation guión el subproceso
  devolvió un error con estado de salida 127

Status in grub2 package in Ubuntu:
  Invalid

Bug description:
  This ussue appears after entering the follow instructions on terminal:
  sudo apt-get clean all
  sudo apt-get update
  sudo apt-get upgrade

  ProblemType: Package
  DistroRelease: Ubuntu 18.04
  Package: grub-efi-amd64 2.02-2ubuntu8
  ProcVersionSignature: Ubuntu 4.13.0-21.24-generic 4.13.13
  Uname: Linux 4.13.0-21-generic x86_64
  ApportVersion: 2.20.9-0ubuntu4
  Architecture: amd64
  Date: Fri Jun  8 09:18:20 2018
  ErrorMessage: instalado grub-efi-amd64 paquete post-installation guión el subproceso devolvió un error con estado de salida 127
  InstallationDate: Installed on 2016-10-06 (609 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  InvalidGrubScript: /etc/default/grub
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-21-generic.efi.signed root=UUID=ce71a7c5-b97c-4381-9da3-84f144b5dd88 ro quiet splash vt.handoff=7
  Python3Details: /usr/bin/python3.6, Python 3.6.5, unpackaged
  PythonDetails: /usr/bin/python2.7, Python 2.7.14+, unpackaged
  RelatedPackageVersions:
   dpkg 1.19.0.5ubuntu1
   apt  1.6~beta1
  SourcePackage: grub2
  Title: package grub-efi-amd64 2.02-2ubuntu8 failed to install/upgrade: instalado grub-efi-amd64 paquete post-installation guión el subproceso devolvió un error con estado de salida 127
  UpgradeStatus: Upgraded to bionic on 2018-04-14 (54 days ago)

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