Error 500 in Nuxeo wirh NullPointerException

Hi,

I have a lot of http 500 error with such message in the log :

2017-02-28 08:52:20,050 ERROR [http-bio-10.242.100.40-7338-exec-217] [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/nuxeo].[Nuxeo WebEngine Servlet]] Servlet.service() for servlet [Nuxeo WebEngine Servlet] in context with path [/nuxeo] threw exception [javax.servlet.ServletException: org.apache.jasper.JasperException: An exception occurred processing JSP page /nuxeo_error.jsp at line 117

114:

115: 120:

Stacktrace:] with root cause java.lang.IllegalStateException: getOutputStream() has already been called for this response

at org.apache.catalina.connector.Response.getWriter(Response.java:678)

or

nuxeo.disable.redirect.wrapper : true user_message : Erreur inconnue. Cliquez sur les liens ci-dessous pour avoir plus de détails ou retourner sur l'application. NuxeoExceptionHandlerMarker : true securityError : false messageBundle : java.util.PropertyResourceBundle@80a7802 stackTrace : java.lang.NullPointerException

2017-02-28 08:53:28,204 ERROR [http-bio-10.242.100.40-7338-exec-217] [org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/nuxeo].[jsp]] Servlet.service() for servlet jsp threw exception java.lang.NullPointerException

at org.jboss.seam.mock.MockExternalContext$3.getAttribute(MockExternalContext.java:388)
at org.jboss.seam.mock.MockExternalContext$AttributeMap.get(MockExternalContext.java:412)
at org.jboss.seam.contexts.ServerConversationContext.get(ServerConversationContext.java:103)
at org.jboss.seam.contexts.Contexts.lookupInStatefulContexts(Contexts.java:228)
at org.jboss.seam.Component.getInstance(Component.java:1996)
at org.jboss.seam.Component.getInstance(Component.java:1991)
at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:55)
at org.jboss.seam.Namespace.getComponentInstance(Namespace.java:50)
at org.jboss.seam.el.SeamELResolver.resolveBase(SeamELResolver.java:148)
at org.jboss.seam.el.SeamELResolver.getValue(SeamELResolver.java:51)
at com.sun.faces.el.DemuxCompositeELResolver._getValue(DemuxCompositeELResolver.java:176)
at com.sun.faces.el.DemuxCompositeELResolver.getValue(DemuxCompositeELResolver.java:203)
at com.sun.faces.el.ChainTypeCompositeELResolver.getValue(ChainTypeCompositeELResolver.java:90)
at org.apache.jasper.el.JasperELResolver.getValue(JasperELResolver.java:90)
at org.apache.el.parser.AstIdentifier.getValue(AstIdentifier.java:71)
at org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
at org.apache.jasper.runtime.PageContextImpl.proprietaryEvaluate(PageContextImpl.java:967)
at org.apache.jsp.nuxeo_005ferror_jsp._jspx_meth_c_005fout_005f0(nuxeo_005ferror_jsp.ja

Could you help me to explain why ?

Jean-Baptiste DENIZE

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