MacBook Pro Keyboard and Trackpad Not Working

I have a mid 2014 MacBook Pro ...

A 2014 Macbook Pro cannot run Tahoe. It is hardware-contrained to running not higher macod than OS 11 "Big Sur." Can you confirm your Mac's sub-model for us?

Any sudden change in trackpad and/or keyboard behavior can be due to a swollen battery. Some "check at home" items:

— Unexpected trackpad and/or keyboard inputs.

— The gap between the display and the deck is not even when the display is closed.

— The gap between the bottom plate and chassis is uneven in places.

— Some of the screws that hold the bottom plate are loose or have popped out.

— The trackpad surface is higher than the surrounding deck surface.

— The computer "rocks" a bit on a known flat surface†.

† — I find solid-surface and granite countertops very effective flat test surfaces.

If you find ANY of these, seek Apple service immediately. Swelling can increase dramatically even overnight and can cause irreparable damage to the metal chassis and logic board.

Sonuvagun! 11,1 is a MacBook Pro 13-inch Mid-2014 Macbook Pro. I saw one other post late last week where a user was offered Tahoe on a non-supported model. This sounds like a bug.

Do you have a current backup of your data? If so, you can use Recovery to reinstall the OS. OS reinstall options are managed by the key combos you use to invoke recovery, shown here:

How to start up from macOS Recovery - Apple Support

You should let Apple know: Feedback - macOS - Apple