We couldn't find the Customer Account Layout. TrailHead challenge Can any one tell me what is the error.????????

Hi @YIQI ZHANG

After creating the Customer Account Layout & Partner Layout

Go to Account object > Record Type click add new

Add name Customer Account, Make sure visible box is checked in step 2 chose layout "customer account layout"

Repeat the same for the 'Partner layout'

After that you'll be able to pass the trailhead.