Grub is missing Kubuntu?

[Wobbelblob]

Well, I have to take back some of my happiness. Because I only saw it in the bootloader, but never tested it further, because I needed to run some errands. Trying it out now and it doesn't boot from the menu entry and instead throws an error

error: command /EFI/FEDORA/SHIMX64.EFI not found

. Maybe not that exact wording but still. Sorry for the pre-emptive celebration...

[die.boer]

open the file again

sudo nano /etc/grub.d/40_custom

and replace the entry with this
menuentry "Bazzite" {
insmod part_gpt
insmod fat
search --no-floppy --file --set=root /EFI/FEDORA/SHIMX64.EFI
chainloader /EFI/FEDORA/SHIMX64.EFI
}

then again

sudo update-grub

and reboot

[Wobbelblob]

That worked. And I assume it is more or less intended that instead of booting directly it boots into the GRUB of Bazzite?