An error occurred during boot repair.

[sunbear-c22]

After using boot repair, it told me I had an error. See here (http://paste.ubuntu.com/p/QpTZC8rxb9/)

Q1: May i know what is the error and what I need to do?

I had used the "If Manjaro is not involved" procedure mentioned here (https://unix.stackexchange.com/a/273083). I wanted to use `nvme0n1p3/etc/default/grub` instead of `sdb3/etc/default/grub` to be the default boot script.

Outcomes:

I am able to use the nvme0n1p3/etc/default/grub file to boot up.
Grub2 menu background turned greyish color and the background image that I had specified in /etc/default/grub failed to appear. Changes in video resolution were effected.
The grub2 Menu showed several EFI boot options which I did not have before and don't want them to appear. See below.




*Ubuntu
Advance options for Ubuntu
EFI/BOOT/bkpbootx64.efi
EFI/BOOT/fbx64.efi
EFI/ubuntu/fbx64.efi
EFI/ubuntu/fwupx64.efi
EFI/ubuntu/mmx64.efi
Ubuntu 18.04.3 LTS (18.04) (on /dev/sdb3)
Advance options for Ubuntu 18.04.3 LTS (18.04) (on /dev/sdb3)
System setup


Q2: How can I fix Outcome 2 and 3?

Thanks.


UEFI Boot setup:
Fast boot -- Disabled
CSM --Disabled
Secure Boot: State -- Enabled
Platform key State -- Unloaded
OS Type -- Other OS



$ [ -d /sys/firmware/efi ] && echo "EFI boot on HDD" || echo "Legacy boot on HDD"
EFI boot on HDD