package grub-efi-amd64-signed 1.66.18+2.02~beta2-36ubuntu3.18 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 1

[Heuller]

Description: Ubuntu 16.04.4 LTS
Release: 16.04

grub-efi-amd64-signed:
  Instalado: 1.66.18+2.02~beta2-36ubuntu3.18
  Candidato: 1.66.18+2.02~beta2-36ubuntu3.18
  Tabela de versão:
 *** 1.66.18+2.02~beta2-36ubuntu3.18 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1.66+2.02~beta2-36ubuntu3 500
        500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
N: Impossível encontrar o pacote pkgname

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66.18+2.02~beta2-36ubuntu3.18
ProcVersionSignature: Ubuntu 4.4.0-128.154-generic 4.4.131
Uname: Linux 4.4.0-128-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Sat Jun 23 15:28:07 2018
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
ErrorMessage: sub-processo script post-installation instalado retornou estado de saída de erro 1
InstallationDate: Installed on 2017-04-10 (440 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.4
 apt 1.2.26
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66.18+2.02~beta2-36ubuntu3.18 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 1
UpgradeStatus: No upgrade log present (probably fresh install)