Errors were encountered while processing: linux-image-5.13.0-44-generic

[temesgen]

$ sudo apt upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt --fix-broken install' to correct these.
The following packages have unmet dependencies:
E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

$ sudo apt --fix-broken install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following packages were automatically installed and are no longer required:
  linux-headers-5.13.0-51-generic linux-hwe-5.13-headers-5.13.0-51 linux-image-5.13.0-51-generic linux-modules-5.13.0-51-generic
  linux-modules-extra-5.13.0-51-generic
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  linux-image-unsigned-5.13.0-44-generic
Suggested packages:
  fdutils linux-doc | linux-hwe-5.13-source-5.13.0 linux-hwe-5.13-tools linux-headers-5.13.0-44-generic
  linux-modules-extra-5.13.0-44-generic
The following packages will be REMOVED:
  linux-image-5.13.0-44-generic
The following NEW packages will be installed:
  linux-image-unsigned-5.13.0-44-generic
0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded.
3 not fully installed or removed.
Need to get 0 B/10.1 MB of archives.
After this operation, 283 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
dpkg: linux-image-5.13.0-44-generic: dependency problems, but removing anyway as you requested:
 linux-modules-5.13.0-44-generic depends on linux-image-5.13.0-44-generic | linux-image-unsigned-5.13.0-44-generic; however:
  Package linux-image-5.13.0-44-generic is to be removed.
  Package linux-image-unsigned-5.13.0-44-generic is not installed.

(Reading database ... 238004 files and directories currently installed.)
Removing linux-image-5.13.0-44-generic (5.13.0-44.49~20.04.1) ...
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-5.13.0-44-generic
/etc/kernel/postrm.d/zz-update-grub:
Sourcing file `/etc/default/grub'
Sourcing file `/etc/default/grub.d/init-select.cfg'
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.15.0-41-generic
Found initrd image: /boot/initrd.img-5.15.0-41-generic
Found linux image: /boot/vmlinuz-5.13.0-51-generic
Found initrd image: /boot/initrd.img-5.13.0-51-generic
Found linux image: /boot/vmlinuz-5.13.0-48-generic
Found initrd image: /boot/initrd.img-5.13.0-48-generic
Found Windows Boot Manager on /dev/sda1@/EFI/Microsoft/Boot/bootmgfw.efi
Adding boot menu entry for UEFI Firmware Settings
error: $.
error: syntax error.
error: Incorrect command.
error: syntax error.
Syntax error at line 331
Syntax errors are detected in generated GRUB config file.
Ensure that there are no errors in /etc/default/grub
and /etc/grub.d/* files or please file a bug report with
/boot/grub/grub.cfg.new file attached.
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 1
dpkg: error processing package linux-image-5.13.0-44-generic (--remove):
 installed linux-image-5.13.0-44-generic package post-removal script subprocess returned error exit status 1
dpkg: too many errors, stopping
Errors were encountered while processing:
 linux-image-5.13.0-44-generic
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.13.0-44-generic 5.13.0-44.49~20.04.1
ProcVersionSignature: Ubuntu 5.13.0-48.54~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Jul 17 00:20:03 2022
InstallationDate: Installed on 2022-02-03 (162 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
SourcePackage: linux-signed-hwe-5.13
UpgradeStatus: No upgrade log present (probably fresh install)

[Aaron Rainbolt (arraybolt3)]

Did you tweak /etc/default/grub by any chance?

[temesgen (teme-one)]

I did not touch /etc/default/grub. But a day before this issue, I upgraded from windows 10 to windows 11, which is running alongside ubuntu in dual boot.

[temesgen (teme-one)]

Fixed the issue submitted above using the following link(Official): https://help.ubuntu.com/community/RemoveOldKernels#Unmet_Dependency_Errors
Here are the commands from the link:
$ sudo apt-get update ## Update the package database
$ sudo apt-get clean hello ## Delete the hello package from the local cache
$ sudo apt-get install --reinstall hello ## Download and reinstall the latest version of hello

In my case, 'hello' is replaced by 'linux-image-5.13.0-44-generic'