Hi,

I am using DSpace 4.1.

I found this error in the log file cocoon.log. I  would like to find out what 
causes this error :

2015-05-07 16:08:10,925 ERROR cocoon.handled  - Could not read resource 
cocoon://DRI/1/handle/xxxxx/xxx/xmlworkflow
        at <map:serialize type="xml"> - 
jndi:/localhost/aspects/aspects.xmap:85:34
        at <map:transform type="PageNotFound"> - 
jndi:/localhost/aspects/aspects.xmap:84:43
        at <map:generate> - jndi:/localhost/aspects/aspects.xmap:83:22
        at <map:serialize type="xhtml"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:164:34
        at <map:transform type="i18n"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:158:33
        at <map:transform> - jndi:/localhost/themes/Mirage/sitemap.xmap:153:51
        at <map:transform type="IncludePageMeta"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:140:55
        at <map:transform type="IncludePageMeta"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:135:55
        at <map:transform type="IncludePageMeta"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:126:55
       at <map:generate type="file"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:120:55
        at <map:match> - jndi:/localhost/themes/Mirage/sitemap.xmap:117:28
        at <map:mount> - jndi:/localhost/themes/themes.xmap:33:45
        at <map:match type="ThemeMatcher"> - 
jndi:/localhost/themes/themes.xmap:32:35
        at <map:mount> - jndi:/localhost/sitemap.xmap:680:94
org.apache.cocoon.ProcessingException: Could not read resource 
cocoon://DRI/1/handle/xxxxx/xxx/xmlworkflow
        at <map:serialize type="xml"> - 
jndi:/localhost/aspects/aspects.xmap:85:34
        at <map:transform type="PageNotFound"> - 
jndi:/localhost/aspects/aspects.xmap:84:43
        at <map:generate> - jndi:/localhost/aspects/aspects.xmap:83:22
        at <map:serialize type="xhtml"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:164:34
        at <map:transform type="i18n"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:158:33
        at <map:transform> - jndi:/localhost/themes/Mirage/sitemap.xmap:153:51
        at <map:transform type="IncludePageMeta"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:140:55
        at <map:transform type="IncludePageMeta"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:135:55
        at <map:transform type="IncludePageMeta"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:126:55
        at <map:generate type="file"> - 
jndi:/localhost/themes/Mirage/sitemap.xmap:120:55
        at <map:match> - jndi:/localhost/themes/Mirage/sitemap.xmap:117:28
        at <map:mount> - jndi:/localhost/themes/themes.xmap:33:45
        at <map:match type="ThemeMatcher"> - 
jndi:/localhost/themes/themes.xmap:32:35
        at <map:mount> - jndi:/localhost/sitemap.xmap:680:94
        at 
org.apache.cocoon.components.source.util.SourceUtil.handleSAXException(SourceUtil.java:409)
        at 
org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:138)
        at sun.reflect.GeneratedMethodAccessor126.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy81.generate(Unknown Source)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:544)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:273)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
        at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy80.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.GeneratedMethodAccessor126.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy81.generate(Unknown Source)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:544)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:273)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:439)
        at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy80.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:728)
        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$ServiceInterceptor.invoke(ServletFactoryBean.java:264)
        at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
        at 
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
        at com.sun.proxy.$Proxy77.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.doPost(FrameworkServlet.java:789)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        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:222)
        at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
        at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
        at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
        at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
        at 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
        at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
        at 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
        at 
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
        at 
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
        at 
org.apache.tomcat.util.net.AprEndpoint$SocketWithOptionsProcessor.run(AprEndpoint.java:1810)
        at 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1177)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
        at java.lang.Thread.run(Thread.java:857)
Caused by: java.lang.NullPointerException
        at 
org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:292)
        at 
org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:148)
        at 
org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:62)
        at 
org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:153)
        at 
org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:183)
        at 
org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:99)
        at 
org.dspace.app.xmlui.cocoon.AspectGenerator.setup(AspectGenerator.java:81)
        at sun.reflect.GeneratedMethodAccessor82.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy81.setup(Unknown Source)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:343)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:710)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:466)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.prepareInternal(AbstractProcessingPipeline.java:480)
        at sun.reflect.GeneratedMethodAccessor127.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy80.prepareInternal(Unknown Source)
        at 
org.apache.cocoon.components.source.impl.SitemapSource.init(SitemapSource.java:292)
        at 
org.apache.cocoon.components.source.impl.SitemapSource.<init>(SitemapSource.java:148)
        at 
org.apache.cocoon.components.source.impl.SitemapSourceFactory.getSource(SitemapSourceFactory.java:62)
        at 
org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:153)
        at 
org.apache.cocoon.components.source.CocoonSourceResolver.resolveURI(CocoonSourceResolver.java:183)
        at 
org.apache.cocoon.generation.FileGenerator.setup(FileGenerator.java:99)
        at sun.reflect.GeneratedMethodAccessor82.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:56)
        at java.lang.reflect.Method.invoke(Method.java:620)
        at 
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
        at com.sun.proxy.$Proxy81.setup(Unknown Source)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.setupPipeline(AbstractProcessingPipeline.java:343)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.setupPipeline(AbstractCachingProcessingPipeline.java:710)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.preparePipeline(AbstractProcessingPipeline.java:466)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:411)


Thanks for your help,
______________________________________________________
Johanne Crête
Technicienne en informatique
Service des bibliothèques et archives, Université de Sherbrooke
Sherbrooke (Québec) J1K 2R1 CANADA
johanne.cr...@usherbrooke.ca<mailto:johanne.cr...@usherbrooke.ca>
(819) 821-8000, poste 66294
[cid:image001.png@01CD5B51.8AEC6840]<http://www.facebook.com/BibliothequesUdeS> 
[cid:image008.png@01CF96C9.F68A85E0] <http://twitter.com/#!/BiblioUdeS>   
[Description : Description : cid:image003.png@01CCE18F.717815D0] 
<http://www.youtube.com/bibliosusherbrooke>



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