2018-02-20 10:35:37,442 [ajp-nio2-8082-exec-1] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N82-E1 ^%^ org.olat.core.logging
https:**RedScreen**
<dispatchinfo>
<componentinfo>
<compname>qpoolTree</compname>
<compclass>org.olat.core.gui.components.tree.MenuTree</compclass>
<extendedinfo>n/a</extendedinfo>
<event>
<class>org.olat.core.gui.components.tree.TreeEvent</class>
<command>ctncl</command>
<tostring>TreeEvent:{cmd:ctncl, nodeid:97152179948384}</tostring>
</event>
</componentinfo>
<controllerinfo>
<controllername>org.olat.modules.qpool.ui.QuestionPoolMainEditorController</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:589)
at org.olat.core.gui.components.Window.doDispatchRequest(Window.java:282)
at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
at org.olat.dispatcher.AuthenticatedDispatcher.processValidDispatchURI(AuthenticatedDispatcher.java:273)
at org.olat.dispatcher.AuthenticatedDispatcher.execute(AuthenticatedDispatcher.java:190)
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:661)
>>> stack of 2.cause::java.lang.NullPointerException: null
-> at org.olat.modules.qpool.ui.QuestionPoolMainEditorController.getDelegate(QuestionPoolMainEditorController.java:159)
at org.olat.modules.qpool.ui.QuestionPoolMainEditorController.doSelectControllerTreeNode(QuestionPoolMainEditorController.java:150)
at org.olat.modules.qpool.ui.QuestionPoolMainEditorController.event(QuestionPoolMainEditorController.java:143)
at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:202)
at org.olat.core.gui.components.AbstractComponent$1.run(AbstractComponent.java:240)
at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
at org.olat.core.gui.components.AbstractComponent.fireEvent(AbstractComponent.java:238)
at org.olat.core.gui.components.tree.MenuTree.handleClick(MenuTree.java:297)
at org.olat.core.gui.components.tree.MenuTree.doDispatchRequest(MenuTree.java:196)
at org.olat.core.gui.components.AbstractComponent.dispatchRequest(AbstractComponent.java:193)
at org.olat.core.gui.components.Window.doDispatchToComponent(Window.java:1193)