java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at org.hibernate.engine.query.HQLQueryPlan.buildParameterMetadata(HQLQueryPlan.java:296)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:97)
at org.hibernate.engine.query.HQLQueryPlan.(HQLQueryPlan.java:56)
at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72)
at org.hibernate.impl.SessionFactoryImpl.checkNamedQueries(SessionFactoryImpl.java:400)
at org.hibernate.impl.SessionFactoryImpl.(SessionFactoryImpl.java:351)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:713)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)

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