What is the UUID error and how can I resolve this?

Online UUID Generator Tool uuid An unbounded-length Unicode string type Uuid Represent a database agnostic UUID datatype class BigInteger¶ A type for bigger int integers uuid uuid : UUID name : String description : String inventory : ArrayList Item > extends Critter > Item visitors : ArrayList north , south , east , w est

uuid Crate uuid Copy item path Generate and parse universally unique identifiers A UUID is a unique 128-bit value, stored as 16 octets, and regularly