Erro estranho EJB + JSF

Não sei o que faço com esse erro… Alguém me ajude…
descriptionThe server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: #{LoginFacade.validate}: javax.ejb.EJBException: nested exception is: java.rmi.MarshalException: CORBA MARSHAL [telefone removido] No; nested exception is: 
	org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 207  completed: No

root cause

javax.faces.FacesException: #{LoginFacade.validate}: javax.ejb.EJBException: nested exception is: java.rmi.MarshalException: CORBA MARSHAL [telefone removido] No; nested exception is: 
	org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 207  completed: No

root cause

javax.faces.el.EvaluationException: javax.ejb.EJBException: nested exception is: java.rmi.MarshalException: CORBA MARSHAL [telefone removido] No; nested exception is: 
	org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 207  completed: No

root cause

javax.ejb.EJBException: nested exception is: java.rmi.MarshalException: CORBA MARSHAL [telefone removido] No; nested exception is: 
	org.omg.CORBA.MARSHAL:   vmcid: SUN  minor code: 207  completed: No
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