package grub-pc 2.12-1ubuntu7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 2

[Ferenc Forró]

package grub-pc 2.12-1ubuntu7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 2

ProblemType: Package
DistroRelease: Ubuntu 24.04
Package: grub-pc 2.12-1ubuntu7
ProcVersionSignature: Ubuntu 6.8.0-40.40~22.04.3-generic 6.8.12
Uname: Linux 6.8.0-40-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.28.1-0ubuntu3.1
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Wed Sep 11 16:12:46 2024
ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 2
InstallationDate: Installed on 2020-09-12 (1460 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
InvalidGrubScript: /etc/grub.d/40_custom.save /etc/grub.d/40_custom
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.8.0-40-generic root=UUID=e3ef1bb5-1953-4ae2-99af-cbf0eabe5ac4 ro quiet splash vt.handoff=7
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal, 3.12.3-0ubuntu2
PythonDetails: N/A
RebootRequiredPkgs: Error: path contained symlinks.
RelatedPackageVersions:
 dpkg 1.22.6ubuntu6.1
 apt 2.7.14build2
SourcePackage: grub2
Title: package grub-pc 2.12-1ubuntu7 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 2
UpgradeStatus: Upgraded to noble on 2024-09-11 (0 days ago)
mtime.conffile..etc.init.d.apport: 2024-07-22T16:59:07

[Mate Kukri (mkukri)]

Hi,

It looks like your /etc/grub.d/40_custom file is corrupt, please double check that and retry the update.