Keyboard Backlight missing from Settings

I have a Lenovo ThinkPad X1 Carbon 4th Gen.

Recently few days ago I got an update, in that update I was unable to find the option to enable backlight in settings > power options.

Where It was available before the update.

Please check the issue.

Thanks for providing a good distro & Thanks of support in advance.

Is it a laptop keyboard or external keyboard?

Please post your system info as outlined here: