One particular user has a problem viewing the submissions page, using the
XML UI on DSpace 6.3. Other users don't have the same problem, and this
user can view the submissions page using the JSP UI.

DSpace version:  6.3
SCM revision:  ${buildNumber}
SCM branch:  UNKNOWN_BRANCH
OS:  Linux(amd64) version 4.15.0-47-generic
Discovery:  enabled.
JRE:  Oracle Corporation version 1.8.0_191
Ant version:  Apache Ant(TM) version 1.10.3 compiled on July 19 2018
Maven version:  3.5.2
DSpace home:  /dspace

I've tried other XML themes, with the same result.

Any ideas as to how I can get this user to view the submissions page using
Mirage2?

Nothing appears in the dspace log, but the floowing stacktrace is displayed
in the browser:

Java stacktrace: java.lang.NullPointerException
    at
org.dspace.app.xmlui.aspect.submission.Submissions.addPreviousSubmissions(Submissions.java:394)
    at
org.dspace.app.xmlui.aspect.submission.Submissions.addBody(Submissions.java:147)
    at
org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:234)
    at
java.base/jdk.internal.reflect.GeneratedMethodAccessor164.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy217.startElement(Unknown Source)
    at
org.apache.cocoon.components.sax.XMLTeePipe.startElement(XMLTeePipe.java:87)
    at
org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
    at
org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:251)
    at
java.base/jdk.internal.reflect.GeneratedMethodAccessor164.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy218.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.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
    at
org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:251)
    at
java.base/jdk.internal.reflect.GeneratedMethodAccessor164.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy218.startElement(Unknown Source)
    at
org.apache.cocoon.environment.internal.EnvironmentChanger.startElement(EnvironmentStack.java:140)
    at
org.apache.cocoon.components.sax.XMLTeePipe.startElement(XMLTeePipe.java:87)
    at
org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
    at
org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:251)
    at
java.base/jdk.internal.reflect.GeneratedMethodAccessor164.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy218.startElement(Unknown Source)
    at
org.apache.cocoon.xml.AbstractXMLPipe.startElement(AbstractXMLPipe.java:94)
    at
org.dspace.app.xmlui.wing.AbstractWingTransformer.startElement(AbstractWingTransformer.java:251)
    at
java.base/jdk.internal.reflect.GeneratedMethodAccessor164.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy218.startElement(Unknown Source)
    at
org.apache.cocoon.environment.internal.EnvironmentChanger.startElement(EnvironmentStack.java:140)
    at
org.apache.cocoon.components.sax.XMLTeePipe.startElement(XMLTeePipe.java:87)
    at
org.apache.cocoon.components.sax.AbstractXMLByteStreamInterpreter.parse(AbstractXMLByteStreamInterpreter.java:117)
    at
org.apache.cocoon.components.sax.XMLByteStreamInterpreter.deserialize(XMLByteStreamInterpreter.java:44)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:324)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:326)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:544)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:273)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:544)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:273)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:544)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:273)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:750)
    at jdk.internal.reflect.GeneratedMethodAccessor220.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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 jdk.internal.reflect.GeneratedMethodAccessor181.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy212.generate(Unknown Source)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:544)
    at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:273)
    at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:439)
    at jdk.internal.reflect.GeneratedMethodAccessor214.invoke(Unknown
Source)
    at
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at
org.apache.cocoon.core.container.spring.avalon.PoolableProxyHandler.invoke(PoolableProxyHandler.java:71)
    at com.sun.proxy.$Proxy211.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:742)
    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$ServiceInterceptor.invoke(ServletFactoryBean.java:264)
    at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
    at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
    at com.sun.proxy.$Proxy208.service(Unknown Source)
    at org.dspace.springmvc.CocoonView.render(CocoonView.java:113)
    at
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1216)
    at
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1001)
    at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:945)
    at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:867)
    at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:951)
    at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:842)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
    at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:827)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at
org.dspace.app.xmlui.cocoon.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:113)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at
org.dspace.app.xmlui.cocoon.DSpaceCocoonServletFilter.doFilter(DSpaceCocoonServletFilter.java:160)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at
org.dspace.app.xmlui.cocoon.servlet.multipart.DSpaceMultipartFilter.doFilter(DSpaceMultipartFilter.java:119)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at
org.dspace.utils.servlet.DSpaceWebappServletFilter.doFilter(DSpaceWebappServletFilter.java:78)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
    at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:493)
    at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
    at psiprobe.Tomcat85AgentValve.invoke(Tomcat85AgentValve.java:35)
    at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
    at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
    at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
    at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
    at org.apache.coyote.ajp.AjpProcessor.service(AjpProcessor.java:476)
    at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
    at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
    at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
    at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
    at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:844)

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