package grub-efi-amd64-signed 1.93.1+2.02-2ubuntu8.1 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Henry]

ni idea que paso , trate de montar la actualización y arrojo el error. no preste detalles al error , mas un error que si tengo es que en ocasiones no puedo seleccionar algunos iconos del escritorio con el click del raton, es como si existiera algo super puesto , eso paso desde hace 5 meses mas o menos

ProblemType: Package
DistroRelease: Ubuntu 18.04
Package: grub-efi-amd64-signed 1.93.1+2.02-2ubuntu8.1
ProcVersionSignature: Ubuntu 4.15.0-24.26-generic 4.15.18
Uname: Linux 4.15.0-24-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
Date: Wed Jul 4 09:22:01 2018
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2017-06-08 (390 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
Python3Details: /usr/bin/python3.6, Python 3.6.5, python3-minimal, 3.6.5-3ubuntu1
PythonDetails: /usr/bin/python2.7, Python 2.7.15rc1, python-minimal, 2.7.15~rc1-1
RelatedPackageVersions:
 dpkg 1.19.0.5ubuntu2
 apt 1.6.2
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.93.1+2.02-2ubuntu8.1 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to bionic on 2018-05-29 (36 days ago)