When I update my system, Kubuntu 23.10 x86_64, I get the error message:
Blocked executable in the ESP, ensure grub and shim are up to date: /media/root/3841-B9E0/EFI/debian/shimx64.efi Authenticode checksum [af79b14064601bc0987d4747af1e914a228c05d622ceda03b7a4f67014fee767] is present in dbx
Called up a list of bootups:
efibootmgr -v
I did not see the errored path in the list of available bootups, so I did:
sudo rm /media/root/3841-B9E0/EFI/debian/shimx64.efi
..and I got the following error:
rm: cannot remove '/media/root/3841-B9E0/EFI/debian/shimx64.efi': No such file or directory
What might be the problem with my attempted fix to the 'Blocked executable' error?

