RS creating a wiki on slow system

2016-11-08 13:17:12,800 [ajp-nio-8009-exec-48] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N1-E36

 https://f.xyz.de/auth/RepositoryEntry/1306624007
 
 Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.71 Safari/537.36 ^%^ **RedScreen** null
 
 <dispatchinfo>
 	<componentinfo>
 		<compname>ffo_main_null</compname>
 		<compclass>org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer</compclass>
 		<extendedinfo>n/a</extendedinfo>
 		<event>
 			<class&gt;org.olat.core.gui.control.Event</class&gt;
 			<command>validation ok</command>
 			<tostring>com:validation ok,org.olat.core.gui.control.Event@d62b3f02</tostring>
 		</event>
 	</componentinfo>
 	<controllerinfo>
 		<controllername>org.olat.resource.accesscontrol.provider.free.ui.FreeAccessController</controllername>
 		<controllername>org.olat.resource.accesscontrol.ui.AccessListController</controllername>
 		<controllername>org.olat.repository.ui.RepositoryEntryRuntimeController</controllername>
 		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
 	</controllerinfo>
 </dispatchinfo>
 
>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: null
-> at org.olat.core.gui.exception.ExceptionWindowController.<init>(ExceptionWindowController.java:116)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:57)
   at org.olat.core.gui.exception.MsgFactory.createMessageChiefController(MsgFactory.java:46)
   at org.olat.core.gui.components.Window.dispatchRequest(Window.java:547)
   at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:240)
   at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
   at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:275)
   at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:192)
   at org.olat.core.servlets.OpenOLATServlet.executeUserRequest(OpenOLATServlet.java:289)
   at org.olat.core.servlets.OpenOLATServlet.doPost(OpenOLATServlet.java:232)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
>>> stack of 2.cause::java.lang.NullPointerException: null
-> at org.olat.core.util.session.UserSessionManager.getUserSession(UserSessionManager.java:110)
   at org.olat.core.util.session.UserSessionManager.getUserSession(UserSessionManager.java:138)
   at org.olat.core.gui.UserRequestImpl.getUserSession(UserRequestImpl.java:151)
   at org.olat.core.gui.UserRequestImpl.getIdentity(UserRequestImpl.java:180)
   at org.olat.repository.handlers.WikiHandler$1.create(WikiHandler.java:254)
   at org.olat.repository.ui.RepositoryEntryRuntimeController.launchContent(RepositoryEntryRuntimeController.java:940)
   at org.olat.repository.ui.RepositoryEntryRuntimeController.event(RepositoryEntryRuntimeController.java:558)
   at org.olat.core.gui.control.DefaultController$1.run(DefaultController.java:246)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:243)
   at org.olat.core.gui.control.DefaultController.fireEvent(DefaultController.java:190)