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narrowFrom'null' narrowTo:'interface com. pws.ubiquity.ad.business.PrincipalFacadeHome'It is invalid to call narrow with n ull parameters
java.lang.NullPointerException: narrowFrom'null' narrowTo:'interface com.
pws.ubiquity.ad.business.PrincipalFacadeHome'It is invalid to call narrow with
n
ull parameters	at weblogic.iiop.PortableRemoteObjectDelegateImpl.narrow(PortableRemoteObjectDelegateImpl.java:51)	at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:137)	at com.pws.ubiquity.ad.util.ADEJBUtil.getRemotePrincipalFacade(ADEJBUtil.java:211)	at com.pws.ubiquity.common.web.action.LoginAction.authenticate(LoginAction.java:197)	at com.pws.ubiquity.common.web.action.LoginAction.perform(LoginAction.java:109)	at org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.java:1786)	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1585)	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)	at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)	at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)	at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2456)	at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2039)	at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)	at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)