package grub-common 2.04-1ubuntu26.15 failed to install/upgrade: installed grub-common package post-installation script subprocess returned error exit status 1

[V-info-n]

Nov 07 09:29:41 lts18.bsec.ch systemd[1]: Starting Record successful boot for GRUB...
Nov 07 09:29:41 lts18.bsec.ch grub-editenv[15504]: /usr/bin/grub-editenv: error: invalid environment block.
Nov 07 09:29:41 lts18.bsec.ch systemd[1]: grub-common.service: Main process exited, code=exited, status=1/FAILURE
Nov 07 09:29:41 lts18.bsec.ch systemd[1]: grub-common.service: Failed with result 'exit-code'.
Nov 07 09:29:41 lts18.bsec.ch systemd[1]: Failed to start Record successful boot for GRUB.
dpkg: error processing package grub-common (--configure):
 installed grub-common package post-installation script subprocess returned error exit status 1
Setting up rpcsvc-proto (1.4.2-0ubuntu6) ...
Setting up libc-dev-bin (2.35-0ubuntu3.1) ...
Setting up libtirpc3:amd64 (1.3.2-2ubuntu0.1) ...
dpkg: dependency problems prevent configuration of grub2-common:
 grub2-common depends on grub-common (= 2.04-1ubuntu26.15); however:
  Package grub-common is not configured yet.

dpkg: error processing package grub2-common (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of grub-pc-bin:
 grub-pc-bin depends on grub-common (= 2.04-1ubuntu26.15); however:
  Package grub-common is not configured yet.

dpkg: error processing package grub-pc-bin (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of grub-pc:
 grub-pc depends on grub-common (= 2.04-1ubuntu26.15); however:
  Package grub-common is not configured yet.
 grub-pc depends on grub2-common (= 2.04-1ubuntu26.15); however:
  Package grub2-common is not configured yet.
 grub-pc depends on No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                                              No apport report written because the error message indicates its a followup error from a previous failure.
                                                                       No apport report written because MaxReports is reached already
                                                                                                                                     grub-pc-bin (= 2.04-1ubuntu26.15); however:
  Package grub-pc-bin is not configured yet.

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: grub-common 2.04-1ubuntu26.15
ProcVersionSignature: Ubuntu 5.4.0-131.147-generic 5.4.210
Uname: Linux 5.4.0-131-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
Date: Mon Nov 7 09:29:41 2022
ErrorMessage: installed grub-common package post-installation script subprocess returned error exit status 1
InstallationDate: Installed on 2018-02-22 (1718 days ago)
InstallationMedia: Ubuntu-Server 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180221)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-131-generic root=/dev/mapper/lts18--04srv--vg-root ro net.ifnames=0 biosdevname=0
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3.2
 apt 2.0.9
SourcePackage: grub2
Title: package grub-common 2.04-1ubuntu26.15 failed to install/upgrade: installed grub-common package post-installation script subprocess returned error exit status 1
UpgradeStatus: Upgraded to focal on 2022-11-07 (0 days ago)

[Launchpad Janitor (janitor)]

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