package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 failed to install/upgrade: sub-processo script post-installation instalado retornou estado de saída de erro 1

[Gabriel de Paula Morais]

This occurred as I turned the computer on

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6
ProcVersionSignature: Ubuntu 4.4.0-79.100-generic 4.4.67
Uname: Linux 4.4.0-79-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.4
Architecture: amd64
Date: Thu Jun 8 17:07:01 2017
ErrorMessage: sub-processo script post-installation instalado retornou estado de saída de erro 1
InstallationDate: Installed on 2016-08-24 (290 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.18
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.66.6+2.02~beta2-36ubuntu3.6 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)