package grub-efi-amd64-signed (not installed) failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[Osvaldo Verussa Jr]

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ProblemType: Package
DistroRelease: Ubuntu 19.04
Package: grub-efi-amd64-signed (not installed)
ProcVersionSignature: Ubuntu 5.0.0-37.40-generic 5.0.21
Uname: Linux 5.0.0-37-generic x86_64
ApportVersion: 2.20.10-0ubuntu27.3
Architecture: amd64
Date: Wed Nov 13 04:08:23 2019
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
Python3Details: /usr/bin/python3.7, Python 3.7.3, python3-minimal, 3.7.3-1
PythonDetails: /usr/bin/python2.7, Python 2.7.16, python-minimal, 2.7.16-1
RelatedPackageVersions:
 dpkg 1.19.6ubuntu1.2
 apt 1.8.4
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed (not installed) failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to disco on 2019-11-13 (3 days ago)