I recently installed Ubuntu 22.04 , at some point when using the software updater I got a software index error message. After trying "continue" using sudo ap-get install -f in terminal to fix it I got the following:
$ sudo apt-get install -fReading package lists... DoneBuilding dependency tree... DoneReading state information... DoneThe following packages will be REMOVED: linux-image-6.2.0-26-generic0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.2 not fully installed or removed.After this operation, 13.8 MB disk space will be freed.Do you want to continue? [Y/n] y(Reading database ... 223017 files and directories currently installed.)Removing linux-image-6.2.0-26-generic (6.2.0-26.26~22.04.1) .../etc/kernel/postrm.d/initramfs-tools:update-initramfs: Deleting /boot/initrd.img-6.2.0-26-generic/etc/kernel/postrm.d/zz-update-grub:Sourcing file `/etc/default/grub'/usr/sbin/grub-mkconfig: 9: /etc/default/grub: GRUB_TERMINAL: not foundrun-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 127dpkg: error processing package linux-image-6.2.0-26-generic (--remove): installed linux-image-6.2.0-26-generic package post-removal script subprocess returned error exit status 1dpkg: too many errors, stoppingErrors were encountered while processing: linux-image-6.2.0-26-genericProcessing was halted because there were too many errors.E: Sub-process /usr/bin/dpkg returned an error code (1)I searched for this in many sites but still have issues. I am not an expert in linux, what can I do to fix this problem?