Dear All,

I have recently migrated the data from very old 1.2.1 to 4.2 on Ubuntu 14.04 and postgresql 9.3, every thing is working fine on jspui interface but except Browse feature Discover is not working on xmlui interface, whenever i enter a search term or just click on advance search it gives following errors. I have tried on ubuntu 12.04, postgresql 9.1 but facing data migration problem se opted 14.04 where it works fine.

Please suggest?

An error has occurred

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java.lang.NullPointerException:

Cocoon stacktrace [hide]

Failed to process pipeline
context:/resource://aspects/BrowseArtifacts/sitemap.xmap - 108:40 <map:serialize type="xml">
context:/resource://aspects/BrowseArtifacts/sitemap.xmap - 47:47 <map:transform type="Navigation">
context:/resource://aspects/BrowseArtifacts/sitemap.xmap - 41:28 <map:generate>
context:/resource://aspects/Discovery/sitemap.xmap - 122:32 <map:serialize type="xml">
context:/resource://aspects/Discovery/sitemap.xmap - 116:55 <map:transform type="IncludePageMeta">
context:/resource://aspects/Discovery/sitemap.xmap - 115:53 <map:transform type="SimpleSearch">
context:/resource://aspects/Discovery/sitemap.xmap - 114:53 <map:transform type="SidebarFacetsTransformer">
context:/resource://aspects/Discovery/sitemap.xmap - 78:47 <map:transform type="Navigation">
context:/resource://aspects/Discovery/sitemap.xmap - 66:28 <map:generate>
context:/resource://aspects/Administrative/sitemap.xmap - 1037:31 <map:serialize type="xml">
context:/resource://aspects/Administrative/sitemap.xmap - 282:38 <map:transform type="Navigation">
context:/resource://aspects/Administrative/sitemap.xmap - 281:44 <map:transform type="SystemwideAlerts">
context:/resource://aspects/Administrative/sitemap.xmap - 279:19 <map:generate>
context:/resource://aspects/EPerson/sitemap.xmap - 302:31 <map:serialize type="xml">
context:/resource://aspects/EPerson/sitemap.xmap - 107:38 <map:transform type="Navigation">
context:/resource://aspects/EPerson/sitemap.xmap - 96:19 <map:generate>
context:/resource://aspects/Submission/sitemap.xmap - 277:27 <map:serialize>
context:/resource://aspects/Submission/sitemap.xmap - 257:26 <map:generate>
context:/resource://aspects/Statistics/sitemap.xmap - 292:36 <map:serialize type="xml">
context:/resource://aspects/Statistics/sitemap.xmap - 217:55 <map:transform type="IncludePageMeta">
context:/resource://aspects/Statistics/sitemap.xmap - 37:19 <map:generate>
context:/resource://aspects/Workflow/sitemap.xmap - 161:27 <map:serialize>
context:/resource://aspects/Workflow/sitemap.xmap - 145:26 <map:generate>
context:/jndi:/localhost/xmlui/aspects/aspects.xmap - 85:34 <map:serialize type="xml">
context:/jndi:/localhost/xmlui/aspects/aspects.xmap - 84:43 <map:transform type="PageNotFound">
context:/jndi:/localhost/xmlui/aspects/aspects.xmap - 83:22 <map:generate>
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 164:34 <map:serialize type="xhtml">
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 158:33 <map:transform type="i18n">
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 153:51 <map:transform>
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 140:55 <map:transform type="IncludePageMeta">
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 135:55 <map:transform type="IncludePageMeta">
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 126:55 <map:transform type="IncludePageMeta">
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 120:55 <map:generate type="file">
context:/jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap - 117:28 <map:match>
context:/jndi:/localhost/xmlui/themes/themes.xmap - 33:45 <map:mount>
context:/jndi:/localhost/xmlui/themes/themes.xmap - 32:35 <map:match type="ThemeMatcher">
context:/jndi:/localhost/xmlui/sitemap.xmap - 680:94 <map:mount>

Java stacktrace [hide]

java.lang.NullPointerException
	at org.dspace.content.Item.match(Item.java:939)
	at org.dspace.content.Item.getMetadata(Item.java:528)
	at org.dspace.app.xmlui.aspect.discovery.AbstractSearch.renderItem(AbstractSearch.java:457)
	at org.dspace.app.xmlui.aspect.discovery.AbstractSearch.buildSearchResultsDivision(AbstractSearch.java:394)
	at org.dspace.app.xmlui.aspect.discovery.SimpleSearch.addBody(SimpleSearch.java:228)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:223)
	at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy32.startElement(Unknown Source)
	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:240)
	at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy32.startElement(Unknown Source)
	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:240)
	at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy32.startElement(Unknown Source)
	at org.apache.cocoon.environment.internal.EnvironmentChanger.startElement(EnvironmentStack.java:140)
	at org.apache.cocoon.components.sax.XMLTeePipe.startElement(XMLTeePipe.java:87)
	at org.apache.cocoon.components.sax.AbstractXMLByteStreamInterpreter.parse(AbstractXMLByteStreamInterpreter.java:117)
	at org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserialize(XMLByteStreamInterpreter.java:44)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:324)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:360)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:439)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:147)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:55)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:87)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:239)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:171)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:55)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:87)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:239)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:171)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:239)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:171)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
	at org.apache.cocoon.servlet.RequestProcessor.process(RequestProcessor.java:351)
	at org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:169)
	at org.apache.cocoon.sitemap.SitemapServlet.service(SitemapServlet.java:84)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:468)
	at org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:443)
	at org.apache.cocoon.servletservice.spring.ServletFactoryBean$ServiceInterceptor.invoke(ServletFactoryBean.java:264)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at com.sun.proxy.$Proxy24.service(Unknown Source)
	at org.dspace.springmvc.CocoonView.render(CocoonView.java:113)
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.app.xmlui.cocoon.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.app.xmlui.cocoon.DSpaceCocoonServletFilter.doFilter(DSpaceCocoonServletFilter.java:275)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.app.xmlui.cocoon.servlet.multipart.DSpaceMultipartFilter.doFilter(DSpaceMultipartFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)

Java full stacktrace [hide]

org.apache.cocoon.ProcessingException: Failed to process pipeline
	at <map:serialize type="xml"> - resource://aspects/BrowseArtifacts/sitemap.xmap:108:40
	at <map:transform type="Navigation"> - resource://aspects/BrowseArtifacts/sitemap.xmap:47:47
	at <map:generate> - resource://aspects/BrowseArtifacts/sitemap.xmap:41:28
	at <map:serialize type="xml"> - resource://aspects/Discovery/sitemap.xmap:122:32
	at <map:transform type="IncludePageMeta"> - resource://aspects/Discovery/sitemap.xmap:116:55
	at <map:transform type="SimpleSearch"> - resource://aspects/Discovery/sitemap.xmap:115:53
	at <map:transform type="SidebarFacetsTransformer"> - resource://aspects/Discovery/sitemap.xmap:114:53
	at <map:transform type="Navigation"> - resource://aspects/Discovery/sitemap.xmap:78:47
	at <map:generate> - resource://aspects/Discovery/sitemap.xmap:66:28
	at <map:serialize type="xml"> - resource://aspects/Administrative/sitemap.xmap:1037:31
	at <map:transform type="Navigation"> - resource://aspects/Administrative/sitemap.xmap:282:38
	at <map:transform type="SystemwideAlerts"> - resource://aspects/Administrative/sitemap.xmap:281:44
	at <map:generate> - resource://aspects/Administrative/sitemap.xmap:279:19
	at <map:serialize type="xml"> - resource://aspects/EPerson/sitemap.xmap:302:31
	at <map:transform type="Navigation"> - resource://aspects/EPerson/sitemap.xmap:107:38
	at <map:generate> - resource://aspects/EPerson/sitemap.xmap:96:19
	at <map:serialize> - resource://aspects/Submission/sitemap.xmap:277:27
	at <map:generate> - resource://aspects/Submission/sitemap.xmap:257:26
	at <map:serialize type="xml"> - resource://aspects/Statistics/sitemap.xmap:292:36
	at <map:transform type="IncludePageMeta"> - resource://aspects/Statistics/sitemap.xmap:217:55
	at <map:generate> - resource://aspects/Statistics/sitemap.xmap:37:19
	at <map:serialize> - resource://aspects/Workflow/sitemap.xmap:161:27
	at <map:generate> - resource://aspects/Workflow/sitemap.xmap:145:26
	at <map:serialize type="xml"> - jndi:/localhost/xmlui/aspects/aspects.xmap:85:34
	at <map:transform type="PageNotFound"> - jndi:/localhost/xmlui/aspects/aspects.xmap:84:43
	at <map:generate> - jndi:/localhost/xmlui/aspects/aspects.xmap:83:22
	at <map:serialize type="xhtml"> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:164:34
	at <map:transform type="i18n"> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:158:33
	at <map:transform> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:153:51
	at <map:transform type="IncludePageMeta"> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:140:55
	at <map:transform type="IncludePageMeta"> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:135:55
	at <map:transform type="IncludePageMeta"> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:126:55
	at <map:generate type="file"> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:120:55
	at <map:match> - jndi:/localhost/xmlui/themes/Mirage/sitemap.xmap:117:28
	at <map:mount> - jndi:/localhost/xmlui/themes/themes.xmap:33:45
	at <map:match type="ThemeMatcher"> - jndi:/localhost/xmlui/themes/themes.xmap:32:35
	at <map:mount> - jndi:/localhost/xmlui/sitemap.xmap:680:94
	at org.apache.cocoon.ProcessingException.throwLocated(ProcessingException.java:143)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.handleException(AbstractProcessingPipeline.java:923)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:379)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
	at sun.reflect.GeneratedMethodAccessor91.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)
	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)
	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)
	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)
	at sun.reflect.GeneratedMethodAccessor85.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy28.generate(Unknown Source)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:360)
	at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:439)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy27.process(Unknown Source)
	at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:147)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:55)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:87)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:239)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:171)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:55)
	at org.apache.cocoon.components.treeprocessor.sitemap.MatchNode.invoke(MatchNode.java:87)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:239)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:171)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
	at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:143)
	at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:78)
	at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:81)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:239)
	at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:171)
	at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:247)
	at org.apache.cocoon.servlet.RequestProcessor.process(RequestProcessor.java:351)
	at org.apache.cocoon.servlet.RequestProcessor.service(RequestProcessor.java:169)
	at org.apache.cocoon.sitemap.SitemapServlet.service(SitemapServlet.java:84)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:468)
	at org.apache.cocoon.servletservice.ServletServiceContext$PathDispatcher.forward(ServletServiceContext.java:443)
	at org.apache.cocoon.servletservice.spring.ServletFactoryBean$ServiceInterceptor.invoke(ServletFactoryBean.java:264)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
	at com.sun.proxy.$Proxy24.service(Unknown Source)
	at org.dspace.springmvc.CocoonView.render(CocoonView.java:113)
	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.app.xmlui.cocoon.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.app.xmlui.cocoon.DSpaceCocoonServletFilter.doFilter(DSpaceCocoonServletFilter.java:275)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.app.xmlui.cocoon.servlet.multipart.DSpaceMultipartFilter.doFilter(DSpaceMultipartFilter.java:119)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:987)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:744)
Caused by: org.xml.sax.SAXException: An error was encountered while processing the 'aspect.discovery.SimpleSearch' Wing based component: org.dspace.app.xmlui.aspect.discovery.SimpleSearch
java.lang.NullPointerException
	at org.dspace.app.xmlui.cocoon.AbstractDSpaceTransformer.handleException(AbstractDSpaceTransformer.java:109)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:248)
	at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy32.startElement(Unknown Source)
	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:240)
	at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy32.startElement(Unknown Source)
	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:240)
	at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
	at com.sun.proxy.$Proxy32.startElement(Unknown Source)
	at org.apache.cocoon.environment.internal.EnvironmentChanger.startElement(EnvironmentStack.java:140)
	at org.apache.cocoon.components.sax.XMLTeePipe.startElement(XMLTeePipe.java:87)
	at org.apache.cocoon.components.sax.AbstractXMLByteStreamInterpreter.parse(AbstractXMLByteStreamInterpreter.java:117)
	at org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserialize(XMLByteStreamInterpreter.java:44)
	at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:324)
	... 209 more
Caused by: java.lang.NullPointerException
	at org.dspace.content.Item.match(Item.java:939)
	at org.dspace.content.Item.getMetadata(Item.java:528)
	at org.dspace.app.xmlui.aspect.discovery.AbstractSearch.renderItem(AbstractSearch.java:457)
	at org.dspace.app.xmlui.aspect.discovery.AbstractSearch.buildSearchResultsDivision(AbstractSearch.java:394)
	at org.dspace.app.xmlui.aspect.discovery.SimpleSearch.addBody(SimpleSearch.java:228)
	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:223)


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With Regards,
Vinod Kumar Mishra,
Assistant Librarian,
Biju Patnaik Central Library (BPCL),
NIT Rourkela.
Mob:91+9439420860