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java.lang.ArrayIndexOutOfBoundsException: 0	at org.dspace.app.xmlui.utils.HandleUtil.buildHandleTrail(HandleUtil.java:213)	at org.dspace.app.xmlui.utils.HandleUtil.buildHandleTrail(HandleUtil.java:157)	at org.dspace.app.xmlui.aspect.artifactbrowser.ItemViewer.addPageMeta(ItemViewer.java:190)	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:218)	at sun.reflect.GeneratedMethodAccessor97.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.$Proxy78.startElement(Unknown Source)	at org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)	at org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:240)	at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy78.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor95.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.$Proxy73.process(Unknown Source)	at org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:362)	at org.apache.cocoon.components.source.util.SourceUtil.toSAX(SourceUtil.java:111)	at org.apache.cocoon.components.source.util.SourceUtil.parse(SourceUtil.java:294)	at org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:136)	at sun.reflect.GeneratedMethodAccessor94.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)	at com.sun.proxy.$Proxy74.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.GeneratedMethodAccessor112.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.$Proxy73.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.$Proxy70.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.rdf.negotiation.NegotiationFilter.doFilter(NegotiationFilter.java:115)	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:225)	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: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:1002)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:745)