can't able to upgrade or anything

[krrish jindal]

Do you want to continue? [Y/n] y
(Reading database ... 352907 files and directories currently installed.)
Removing linux-image-5.4.0-131-generic (5.4.0-131.147) ...
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-5.4.0-131-generic
/etc/kernel/postrm.d/zz-update-grub:
Sourcing file `/etc/default/grub'
/usr/sbin/grub-mkconfig: 38: /etc/default/grub: Syntax error: EOF in backquote substitution
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 2
dpkg: error processing package linux-image-5.4.0-131-generic (--remove):
 installed linux-image-5.4.0-131-generic package post-removal script subprocess returned error exit status 1
dpkg: too many errors, stopping
Errors were encountered while processing:
 linux-image-5.4.0-131-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-5.4.0-131-generic 5.4.0-131.147
ProcVersionSignature: Ubuntu 5.15.0-52.58~20.04.1-generic 5.15.60
Uname: Linux 5.15.0-52-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.24
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kakashi 2019 F.... pulseaudio
 /dev/snd/controlC1: kakashi 2019 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Oct 30 02:23:53 2022
InstallationDate: Installed on 2022-10-04 (25 days ago)
InstallationMedia: Ubuntu 20.04.5 LTS "Focal Fossa" - Release amd64 (20220831)
MachineType: Acer Aspire A715-51G
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.15.0-52-generic root=UUID=75858441-ae4c-4c5d-b6e6-6d96da609fb4 ro psmouse.elantech_smbus=0 ivrs_ioapic[32]=00:14.0 nosplash irqpoll
RelatedPackageVersions:
 linux-restricted-modules-5.15.0-52-generic N/A
 linux-backports-modules-5.15.0-52-generic N/A
 linux-firmware 1.187.33
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/09/2022
dmi.bios.release: 1.4
dmi.bios.vendor: INSYDE Corp.
dmi.bios.version: V1.04
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: Metis_ADP
dmi.board.vendor: ADL
dmi.board.version: V1.04
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.ec.firmware.release: 1.1
dmi.modalias: dmi:bvnINSYDECorp.:bvrV1.04:bd04/09/2022:br1.4:efr1.1:svnAcer:pnAspireA715-51G:pvrV1.04:rvnADL:rnMetis_ADP:rvrV1.04:cvnChassisManufacturer:ct10:cvrChassisVersion:sku0000000000000000:
dmi.product.family: Aspire 7
dmi.product.name: Aspire A715-51G
dmi.product.sku: 0000000000000000
dmi.product.version: V1.04
dmi.sys.vendor: Acer

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Chris Guiver (guiverc)]

Thank you for taking the time to report this bug and helping to make Ubuntu better.

Bug reporting is mostly about finding & fixing problems thus preventing future users from hitting the same bug.

I suspect a Support site would be more appropriate, eg. https://answers.launchpad.net/ubuntu. You can also find help with your problem in the support forum of your local Ubuntu community http://loco.ubuntu.com/ or asking at https://askubuntu.com or https://ubuntuforums.org, or for more support options please look at https://discourse.ubuntu.com/t/community-support/709

eg. this link (https://askubuntu.com/questions/1272757/usr-sbin-grub-mkconfig-34-etc-default-grub-syntax-error-eof-in-backquote-s) maybe helpful, which is found on a support site, or you can ask your own questions.