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XWiki Platform / cid:jira-generated-image-avatar-4833411c-d2e8-44c3-9802-b90a0358c4c5 XWIKI-24624 Open

Impossible to use the current user REST endpoint with superadmin
 
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Issue created

 
cid:jira-generated-image-avatar-2cb1abe5-2e98-4258-a9b4-19151f84649f Thomas Mortagne created this issue on 27/Jul/26 13:14
 
Summary: Impossible to use the current user REST endpoint with superadmin
Issue Type: cid:jira-generated-image-avatar-4833411c-d2e8-44c3-9802-b90a0358c4c5 Bug
Affects Versions: 18.2.0-rc-1
Assignee: Unassigned
Components: User
Created: 27/Jul/26 13:14
Priority: cid:jira-generated-image-static-major-466ac876-5846-4761-b2e0-6a8b4240bfc0 Major
Reporter: Thomas Mortagne
Description:

Getting a 500 error response and the server log contains:

2026-07-27 13:09:15.013:WARN :oeje11s.ServletChannel:qtp604125138-219: /xwiki/rest/wikis/xwiki/user
jakarta.servlet.ServletException: javax.servlet.ServletException: java.lang.ClassCastException: class org.xwiki.user.SuperAdminUserReference cannot be cast to class org.xwiki.user.internal.document.DocumentUserReference (org.xwiki.user.SuperAdminUserReference and org.xwiki.user.internal.document.DocumentUserReference are in unnamed module of loader org.eclipse.jetty.ee.webapp.WebAppClassLoader @3f053c80)
	at org.xwiki.rest.jersey.internal.JerseyServletContainer.service(JerseyServletContainer.java:158)
	at org.xwiki.rest.jersey.internal.XWikiRESTServlet.service(XWikiRESTServlet.java:95)
	at org.eclipse.jetty.ee11.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1397)
	at org.eclipse.jetty.ee11.servlet.ServletHolder.handle(ServletHolder.java:754)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1668)
	at com.xpn.xwiki.web.XWikiContextInitializationFilter.doFilter(XWikiContextInitializationFilter.java:73)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:66)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:135)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:240)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SafeRedirectFilter.doFilter(SafeRedirectFilter.java:106)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.ResolveRelativeRedirectFilter.doFilter(ResolveRelativeRedirectFilter.java:129)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SourceURLResolverFilter.doFilter(SourceURLResolverFilter.java:177)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:120)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:208)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.eclipse.jetty.ee11.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:199)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1602)
	at org.eclipse.jetty.ee11.servlet.ServletChannel.dispatch(ServletChannel.java:871)
	at org.eclipse.jetty.ee11.servlet.ServletChannel.handle(ServletChannel.java:449)
	at org.eclipse.jetty.ee11.servlet.ServletHandler.handle(ServletHandler.java:469)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:546)
	at org.eclipse.jetty.ee11.servlet.SessionHandler.handle(SessionHandler.java:763)
	at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1226)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:178)
	at org.eclipse.jetty.server.Server.handle(Server.java:197)
	at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:788)
	at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:420)
	at org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:204)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:317)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1240)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194)
	at java.base/java.lang.Thread.run(Thread.java:1474)
Caused by: 
javax.servlet.ServletException: java.lang.ClassCastException: class org.xwiki.user.SuperAdminUserReference cannot be cast to class org.xwiki.user.internal.document.DocumentUserReference (org.xwiki.user.SuperAdminUserReference and org.xwiki.user.internal.document.DocumentUserReference are in unnamed module of loader org.eclipse.jetty.ee.webapp.WebAppClassLoader @3f053c80)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:413)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:350)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:379)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:312)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
	at org.xwiki.rest.jersey.internal.JerseyServletContainer.service(JerseyServletContainer.java:156)
	at org.xwiki.rest.jersey.internal.XWikiRESTServlet.service(XWikiRESTServlet.java:95)
	at org.eclipse.jetty.ee11.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1397)
	at org.eclipse.jetty.ee11.servlet.ServletHolder.handle(ServletHolder.java:754)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1668)
	at com.xpn.xwiki.web.XWikiContextInitializationFilter.doFilter(XWikiContextInitializationFilter.java:73)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:66)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:135)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:240)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SafeRedirectFilter.doFilter(SafeRedirectFilter.java:106)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.ResolveRelativeRedirectFilter.doFilter(ResolveRelativeRedirectFilter.java:129)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SourceURLResolverFilter.doFilter(SourceURLResolverFilter.java:177)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:120)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:208)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.eclipse.jetty.ee11.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:199)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1602)
	at org.eclipse.jetty.ee11.servlet.ServletChannel.dispatch(ServletChannel.java:871)
	at org.eclipse.jetty.ee11.servlet.ServletChannel.handle(ServletChannel.java:449)
	at org.eclipse.jetty.ee11.servlet.ServletHandler.handle(ServletHandler.java:469)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:546)
	at org.eclipse.jetty.ee11.servlet.SessionHandler.handle(SessionHandler.java:763)
	at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1226)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:178)
	at org.eclipse.jetty.server.Server.handle(Server.java:197)
	at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:788)
	at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:420)
	at org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:204)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:317)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1240)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194)
	at java.base/java.lang.Thread.run(Thread.java:1474)
Caused by: 
java.lang.ClassCastException: class org.xwiki.user.SuperAdminUserReference cannot be cast to class org.xwiki.user.internal.document.DocumentUserReference (org.xwiki.user.SuperAdminUserReference and org.xwiki.user.internal.document.DocumentUserReference are in unnamed module of loader org.eclipse.jetty.ee.webapp.WebAppClassLoader @3f053c80)
	at org.xwiki.user.rest.internal.document.DocumentUserReferenceModelSerializer.toRestUser(DocumentUserReferenceModelSerializer.java:148)
	at org.xwiki.user.rest.internal.resources.CurrentUserResourceImpl.getUser(CurrentUserResourceImpl.java:83)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:52)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:146)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:189)
	at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:219)
	at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:93)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:470)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:394)
	at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:80)
	at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:256)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
	at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:292)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:274)
	at org.glassfish.jersey.internal.Errors.process(Errors.java:244)
	at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
	at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:235)
	at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:684)
	at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:398)
	at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:350)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:379)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:312)
	at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
	at org.xwiki.rest.jersey.internal.JerseyServletContainer.service(JerseyServletContainer.java:156)
	at org.xwiki.rest.jersey.internal.XWikiRESTServlet.service(XWikiRESTServlet.java:95)
	at org.eclipse.jetty.ee11.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1397)
	at org.eclipse.jetty.ee11.servlet.ServletHolder.handle(ServletHolder.java:754)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1668)
	at com.xpn.xwiki.web.XWikiContextInitializationFilter.doFilter(XWikiContextInitializationFilter.java:73)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:66)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:135)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:240)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SafeRedirectFilter.doFilter(SafeRedirectFilter.java:106)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.ResolveRelativeRedirectFilter.doFilter(ResolveRelativeRedirectFilter.java:129)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SourceURLResolverFilter.doFilter(SourceURLResolverFilter.java:177)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:120)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:208)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.eclipse.jetty.ee11.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:199)
	at org.eclipse.jetty.ee11.servlet.FilterHolder.doFilter(FilterHolder.java:205)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1640)
	at org.eclipse.jetty.ee11.servlet.ServletHandler$MappedServlet.handle(ServletHandler.java:1602)
	at org.eclipse.jetty.ee11.servlet.ServletChannel.dispatch(ServletChannel.java:871)
	at org.eclipse.jetty.ee11.servlet.ServletChannel.handle(ServletChannel.java:449)
	at org.eclipse.jetty.ee11.servlet.ServletHandler.handle(ServletHandler.java:469)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:546)
	at org.eclipse.jetty.ee11.servlet.SessionHandler.handle(SessionHandler.java:763)
	at org.eclipse.jetty.server.handler.ContextHandler.handle(ContextHandler.java:1226)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:178)
	at org.eclipse.jetty.server.Server.handle(Server.java:197)
	at org.eclipse.jetty.server.internal.HttpChannelState$HandlerInvoker.run(HttpChannelState.java:788)
	at org.eclipse.jetty.server.internal.HttpConnection.onFillable(HttpConnection.java:420)
	at org.eclipse.jetty.server.internal.HttpConnection$FillableCallback.succeeded(HttpConnection.java:1809)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
	at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:54)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:492)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.epcRunTask(AdaptiveExecutionStrategy.java:428)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:401)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:255)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.run(AdaptiveExecutionStrategy.java:204)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:317)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:1009)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.doRunJob(QueuedThreadPool.java:1240)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1194)
	at java.base/java.lang.Thread.run(Thread.java:1474)

The code assume it's always a DocumentUserReference, but it's not the case of special references like SuperAdminUserReference or GuestUserReference.
 
 
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