Touch Bar is working but is completely invisible
my touchbar is working but is completely invisible and also the keys on my MacBook are not lighting up like they used too, how can I fix these issues?
[Re-Titled by Moderator]
Please see if the below link helps to resolve your issue.
How to reset the SMC of your Mac - Apple Support
Else
Try to Reset NVRAM or PRAM on your Mac - Apple Support
Hope it helps.