[Bug 1990704] Re: package grub-pc 2.06-2ubuntu12 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1

[Acceptable Name]

$ sudo grub-mkconfig | tail 
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
/etc/grub.d/10_linux_zfs: 425: version_find_latest: not found
umount: /tmp/zfsmnt.YABeWP: target is busy.
rmdir: failed to remove '/tmp/zfsmnt.YABeWP': Device or resource busy

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/10_linux_zfs ###


$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu Mantic Minotaur (development branch)
Release:	23.10
Codename:	mantic

$ dpkg -l | grep -Ev '^ii|^rc|^ic'
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ Name                                          Version                                 Architecture Description
+++-=============================================-=======================================-============-================================================================================
iU  grub-efi-amd64-signed                         1.194+2.12~rc1-4ubuntu1                 amd64        GRand Unified Bootloader, version 2 (EFI-AMD64 version, signed)
iF  grub-pc                                       2.12~rc1-4ubuntu1                       amd64        GRand Unified Bootloader, version 2 (PC/BIOS version)
iF  linux-image-6.3.0-7-generic                   6.3.0-7.7+1                             amd64        Signed kernel image generic

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https://bugs.launchpad.net/bugs/1990704

Title:
  package grub-pc 2.06-2ubuntu12 failed to install/upgrade: installed
  grub-pc package post-installation script subprocess returned error
  exit status 1

Status in grub2 package in Ubuntu:
  Confirmed

Bug description:
  This occurred during a new installation of Kinetic with a daily build
  from 20220920 when doing a ZFS install in qemu.

  ProblemType: PackageDistroRelease: Ubuntu 22.10
  Package: grub-pc 2.06-2ubuntu12
  ProcVersionSignature: Ubuntu 5.19.0-15.15-generic 5.19.0
  Uname: Linux 5.19.0-15-generic x86_64
  NonfreeKernelModules: nvidia_modeset nvidia zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.23.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Fri Sep 23 16:33:27 2022
  ErrorMessage: installed grub-pc package post-installation script subprocess returned error exit status 1
  ProcCmdLine: BOOT_IMAGE=/BOOT/ubuntu_qv5znx@/vmlinuz-5.19.0-15-generic root=ZFS=rpool/ROOT/ubuntu_qv5znx ro quiet splash vt.handoff=1
  Python3Details: /usr/bin/python3.10, Python 3.10.7, python3-minimal, 3.10.6-1
  PythonDetails: N/A
  RelatedPackageVersions:
   dpkg 1.21.9ubuntu1
   apt  2.5.2SourcePackage: grub2
  Title: package grub-pc 2.06-2ubuntu12 failed to install/upgrade: installed grub-pc package post-installation script subprocess returned error exit status 1
  UpgradeStatus: No upgrade log present (probably fresh install)

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