javax.persistence.PersistenceException: [PersistenceUnit: defaultDataSource] Unable to build EntityManagerFactory

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    javax.persistence.PersistenceException: [PersistenceUnit: release] Unable to build EntityManagerFactory

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    Root Cause Analysis

    1. javax.persistence.PersistenceException

      [PersistenceUnit: defaultDataSource] Unable to build EntityManagerFactory

      at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory()
    2. Hibernate EJB
      HibernatePersistence.createEntityManagerFactory
      1. org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:677)
      2. org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:126)
      2 frames
    3. JavaEE 7
      Persistence.createEntityManagerFactory
      1. javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:52)
      1 frame