Two white boxes appear after running the vehicle template created by UE. How can I solve this problem?

Hey @user_bca04c33555d06ccc9f9562ed570f27478687ff1545d9bd02db187! Welcome to the Forums!

It looks like your UI is somehow messed up. This is what you are supposed to be seeing:

Have you tried readding the template to your project?

Hey @user_bca04c33555d06ccc9f9562ed570f27478687ff1545d9bd02db187!

Checking in. Was the above the solution you were looking for? Are you still having trouble with your UI?