Type Exception Report
Message Request processing failed; nested exception is java.lang.IllegalStateException: getOutputStream() has already been called for this response
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.IllegalStateException: getOutputStream() has already been called for this response org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) javax.servlet.http.HttpServlet.service(HttpServlet.java:626) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:733) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:97) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
Root Cause
java.lang.IllegalStateException: getOutputStream() has already been called for this response org.apache.catalina.connector.Response.getWriter(Response.java:585) org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:211) org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:354) org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:187) org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1394) org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1139) org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1078) org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:961) org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) javax.servlet.http.HttpServlet.service(HttpServlet.java:626) org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) javax.servlet.http.HttpServlet.service(HttpServlet.java:733) org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) org.jasig.cas.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:97) org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
Note The full stack trace of the root cause is available in the server logs.