QTI 2.1: rs convert 1.2 to 2.1

19:00:10,231 ERROR OLATRuntimeException:175 - OLAT::ERROR ^%^ N1-E24 ^%^ org.olat.core.logging

https://xyz.de/auth/RepositoryEntry/3173679108/Editor/0
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0

**RedScreen** 50

<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.repository.ui.author.CreateRepositoryEntryController</controllername>
		<controllername>org.olat.ims.qti.editor.QTIEditorMainController</controllername>
		<controllername>org.olat.ims.qti.QTIRuntimeController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo>
>>> stack of 1.cause::org.olat.core.logging.OLATRuntimeException: 50
-> 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:644)
>>> stack of 2.cause::java.lang.ArrayIndexOutOfBoundsException: 50
-> at com.ctc.wstx.sw.BufferingXmlWriter.writeCharacters(BufferingXmlWriter.java:529)
   at com.ctc.wstx.sw.BaseStreamWriter.writeCharacters(BaseStreamWriter.java:387)
   at org.olat.ims.qti21.pool.QTI12To21HtmlHandler.characters(QTI12To21HtmlHandler.java:160)
   at org.apache.xerces.parsers.AbstractSAXParser.characters(Unknown Source)
   at org.cyberneko.html.HTMLTagBalancer.characters(HTMLTagBalancer.java:975)
   at org.cyberneko.html.LostText.refeed(LostText.java:70)
   at org.cyberneko.html.HTMLTagBalancer.startElement(HTMLTagBalancer.java:765)
   at org.cyberneko.html.HTMLTagBalancer.forceStartElement(HTMLTagBalancer.java:778)
   at org.cyberneko.html.HTMLTagBalancer.startElement(HTMLTagBalancer.java:650)
   at org.cyberneko.html.filters.DefaultFilter.startElement(DefaultFilter.java:136)
   at org.cyberneko.html.filters.NamespaceBinder.startElement(NamespaceBinder.java:279)