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java.lang.IllegalStateException: getOutputStream() has already been called for this response	at org.apache.catalina.connector.Response.getWriter(Response.java:607)	at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:196)	at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:111)	at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125)	at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118)	at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:171)	at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:116)	at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:76)	at org.apache.jsp.jsp.layout.tiles_005flayout_jsp._jspService(tiles_005flayout_jsp.java:161)	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:98)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:331)	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:329)	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:584)	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:497)	at org.apache.tiles.servlet.context.ServletTilesRequestContext.include(ServletTilesRequestContext.java:260)	at org.apache.tiles.servlet.context.ServletTilesRequestContext.dispatch(ServletTilesRequestContext.java:220)	at org.apache.tiles.renderer.impl.TemplateAttributeRenderer.write(TemplateAttributeRenderer.java:44)	at org.apache.tiles.renderer.impl.AbstractBaseAttributeRenderer.render(AbstractBaseAttributeRenderer.java:106)	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:670)	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:690)	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:644)	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:627)	at org.apache.tiles.impl.BasicTilesContainer.render(BasicTilesContainer.java:321)	at org.springframework.web.servlet.view.tiles2.TilesView.renderMergedOutputModel(TilesView.java:124)	at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:250)	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1047)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:817)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:873)	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)	at java.lang.Thread.run(Thread.java:595)