Cannot use java.util.Date

[und3rs]

My data has some fileds that type is 'java.util.Date'.
When I run my App, I faced the following error.

Invalid Cloneable interface type - interface does not expose any fields.

[application.properties]
graphql.packages=com.myproject.graphql,java.util,kotlin

I've checked the java.util.Data class and like this.
public class Date implements Serializable, Cloneable, Comparable<Date> {

Please help me.
Thank you.