Curriculum: rs creating a new element

2019-03-05 14:17:53,165 [ajp-nio2-8063-exec-2] ERROR OLATRuntimeException - OLAT::ERROR ^%^ N63-E3 ^%^ org.olat.core.logging 

https://xyz.openolat.com/auth/CurriculumAdmin/0/Curriculum/1
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0.2 Safari/605.1.15
**RedScreen** failed to lazily initialize a collection of role: org.olat.modules.curriculum.model.CurriculumImpl.rootElements, could not initialize proxy - no Session

<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.modules.curriculum.ui.EditCurriculumElementController</controllername>
		<controllername>org.olat.modules.curriculum.ui.CurriculumComposerController</controllername>
		<controllername>org.olat.modules.curriculum.ui.CurriculumListManagerController</controllername>
		<controllername>org.olat.modules.curriculum.ui.CurriculumManagerController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo>

>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: failed to lazily initialize a collection of role: org.olat.modules.curriculum.model.CurriculumImpl.rootElements, could not initialize proxy - no Session
-> 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:294)
   at org.olat.core.servlets.OpenOLATServlet.doPost(OpenOLATServlet.java:237)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
>>> stack of 2.cause::org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.olat.modules.curriculum.model.CurriculumImpl.rootElements, could not initialize proxy - no Session
-> at org.hibernate.collection.internal.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:602)
   at org.hibernate.collection.internal.AbstractPersistentCollection.withTemporarySessionIfNeeded(AbstractPersistentCollection.java:217)
   at org.hibernate.collection.internal.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:581)
   at org.hibernate.collection.internal.AbstractPersistentCollection.write(AbstractPersistentCollection.java:408)
   at org.hibernate.collection.internal.PersistentList.add(PersistentList.java:175)
   at org.olat.modules.curriculum.manager.CurriculumElementDAO.createCurriculumElement(CurriculumElementDAO.java:112)
   at org.olat.modules.curriculum.manager.CurriculumServiceImpl.createCurriculumElement(CurriculumServiceImpl.java:263)
   at org.olat.modules.curriculum.ui.EditCurriculumElementController.formOK(EditCurriculumElementController.java:391)
   at org.olat.core.gui.components.form.flexible.impl.FormBasicController.event(FormBasicController.java:384)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:206)
   at org.olat.core.gui.components.AbstractComponent$1.run(AbstractComponent.java:240)