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[PersistenceUnit: myJPA] class or package not found
java.lang.ClassCastException: cannot be cast to	at	at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(	at org.hibernate.internal.SessionFactoryImpl.(	at org.hibernate.cfg.Configuration.buildSessionFactory(	at org.hibernate.ejb.EntityManagerFactoryImpl.(	at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(	at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(	at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(	at	at$600(	at$	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(	at java.util.concurrent.ThreadPoolExecutor$	at	at