package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Rodolfo Brown Lopez]

Install upgrade

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6
ProcVersionSignature: Ubuntu 4.4.0-51.72-generic 4.4.30
Uname: Linux 4.4.0-51-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
Date: Thu Jan 5 07:31:20 2017
DuplicateSignature:
 package:grub-efi-amd64-signed:1.66.6+2.02~beta2-36ubuntu3.6
 Setting up grub-efi-amd64-signed (1.66.6+2.02~beta2-36ubuntu3.6) ...
 grub-install: error: «/usr/lib/grub/i386-pc/modinfo.sh» no existe. Indique --target o --directory.
 dpkg: error processing package grub-efi-amd64-signed (--configure):
  subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2016-05-01 (249 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.15ubuntu0.2
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.