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java.lang.IllegalStateException: PWC3991: Ya se ha llamado a getOutputStream() para esta respuesta	at org.apache.coyote.tomcat5.CoyoteResponse.getWriter(CoyoteResponse.java:701)	at org.apache.coyote.tomcat5.CoyoteResponseFacade.getWriter(CoyoteResponseFacade.java:210)	at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:135)	at com.sun.facelets.FaceletViewHandler.handleRenderException(FaceletViewHandler.java:676)	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:645)	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)	at com.sun.faces.extensions.avatar.lifecycle.PartialTraversalLifecycle.render(PartialTraversalLifecycle.java:106)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)	at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)	at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)	at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:853)	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:703)	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:544)	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:474)	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:366)	at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:531)	at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:321)	at org.apache.catalina.core.StandardHostValve.postInvoke(StandardHostValve.java:230)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:633)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)	at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)	at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:272)	at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)	at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)	at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)	at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)	at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)	at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)	at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)	at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)