java.lang.IllegalArgumentException: Unknown entity: java.util.ArrayList

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    Root Cause Analysis

    1. java.lang.IllegalArgumentException

      Unknown entity: java.util.ArrayList

      at org.hibernate.ejb.AbstractEntityManagerImpl.persist()
    2. Hibernate EJB
      AbstractEntityManagerImpl.persist
      1. org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:842)
      1 frame
    3. org.idiria.mensajeria
      EnviarMensaje.execute
      1. org.idiria.mensajeria.actions.EnviarMensaje.execute(EnviarMensaje.java:116)
      1 frame
    4. org.openxava.controller
      ModuleManager.executeAction
      1. org.openxava.controller.ModuleManager.executeAction(ModuleManager.java:444)
      2. org.openxava.controller.ModuleManager.executeAction(ModuleManager.java:363)
      2 frames