package grub-efi-amd64-signed 1.187.6+2.06-2ubuntu14.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1

[robin]

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ProblemType: Package
DistroRelease: Ubuntu 22.04
Package: grub-efi-amd64-signed 1.187.6+2.06-2ubuntu14.4
ProcVersionSignature: Ubuntu 6.2.0-37.38~22.04.1-generic 6.2.16
Uname: Linux 6.2.0-37-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: pass
Date: Tue Nov 28 18:21:30 2023
ErrorMessage: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2023-11-28 (0 days ago)
InstallationMedia: Ubuntu 22.04.3 LTS "Jammy Jellyfish" - Release amd64 (20230807.2)
Python3Details: /usr/bin/python3.10, Python 3.10.12, python3-minimal, 3.10.6-1~22.04
PythonDetails: N/A
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions:
 dpkg 1.21.1ubuntu2.2
 apt 2.4.11
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.187.6+2.06-2ubuntu14.4 failed to install/upgrade: installed grub-efi-amd64-signed package post-installation script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Julian Andres Klode (juliank)]

Please read the output, your kernels are not signed with keys known to your firmware and hence the update has been aborted to you keep your system hopefully bootable.