When I click on button for record list to create a new record I am facing this error. This button works fine in classic.

I have given all necessary permission. Is there anyone who's facing this kind of same error?

 

I am working on App Customization Specialist SuperBadge and getting following error for challenge 3:

There was an unexpected error while verifying this challenge. Usually this is due to some pre-existing configuration or code in the challenge Org. We recommend using a new Developer Edition (DE) to check this challenge. If you're using a new DE and seeing this error, please post to the developer forums and reference error id: TYDGTKJD.

Could anyone please look into this and suggest.