Authentication broke after bump to v10 from v9

Anyone that has any suggestions on what might have caused this?

I get the following error when trying to sign in or sign up.:

"Cannot use 'in' operator to search for 'auth.signUp' in undefined"

"Cannot use 'in' operator to search for 'auth.signUp' in undefined"

Do I need to replace this with something new?

Authentication broke after bump to v10 from v9 - tRPC