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getWriter() has already been called for this response
java.lang.IllegalStateException: getWriter() has already been called for this response	at org.apache.catalina.connector.Response.getOutputStream(Response.java:588)	at org.apache.catalina.connector.ResponseFacade.getOutputStream(ResponseFacade.java:183)	at javax.servlet.ServletResponseWrapper.getOutputStream(ServletResponseWrapper.java:102)	at javax.servlet.ServletResponseWrapper.getOutputStream(ServletResponseWrapper.java:102)	at org.kohsuke.stapler.ResponseImpl.getOutputStream(ResponseImpl.java:82)	at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:405)	at org.kohsuke.stapler.Stapler.serveStaticResource(Stapler.java:242)	at org.kohsuke.stapler.Stapler.service(Stapler.java:150)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:94)	at hudson.plugins.greenballs.GreenBallFilter.doFilter(GreenBallFilter.java:51)	at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:97)	at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:86)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:47)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:84)	at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:51)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:166)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:173)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)	at hudson.security.HttpSessionContextIntegrationFilter2.doFilter(HttpSessionContextIntegrationFilter2.java:66)	at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:87)	at hudson.security.ChainedServletFilter.doFilter(ChainedServletFilter.java:76)	at hudson.security.HudsonFilter.doFilter(HudsonFilter.java:164)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)	at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)	at java.lang.Thread.run(Thread.java:636)