dpkg: error: cannot access the file '/.deb': File or directory does not exist

[Antonio Douglas da Silva Guedes]

estou tentando instalar um programa, mas não consigo. sempre retorna essa mensagem de erro.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: grub-efi-amd64-signed 1.142.4+2.04-1ubuntu26.2
ProcVersionSignature: Ubuntu 5.4.0-40.44-generic 5.4.44
Uname: Linux 5.4.0-40-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.3
Architecture: amd64
CasperMD5CheckResult: skip
Date: Thu Aug 13 10:23:52 2020
ErrorMessage: problemas de dependência - deixando desconfigurado
InstallationDate: Installed on 2020-07-09 (34 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Python3Details: /usr/bin/python3.8, Python 3.8.2, unpackaged
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.142.4+2.04-1ubuntu26.2 failed to install/upgrade: problemas de dependência - deixando desconfigurado
UpgradeStatus: No upgrade log present (probably fresh install)

[Steve Langasek (vorlon)]

The actual error in your logs is:

dpkg: erro ao processar o pacote grub-pc (--configure):
 o subprocesso instalado, do pacote grub-pc, o script post-installation retornou erro do status de saída 10

I suggest you try running 'sudo dpkg --configure -a' from a terminal.

[Launchpad Janitor (janitor)]

[Expired for grub2-signed (Ubuntu) because there has been no activity for 60 days.]