/layout/tournament/trnsearch.zul kann nicht geladen werden.

Ursache: class org.zkoss.util.WaitLock cannot be cast to class java.util.Map (org.zkoss.util.WaitLock is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @32a9a3ef; java.util.Map is in module java.base of loader 'bootstrap')
java.lang.ClassCastException: class org.zkoss.util.WaitLock cannot be cast to class java.util.Map (org.zkoss.util.WaitLock is in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @32a9a3ef; java.util.Map is in module java.base of loader 'bootstrap')
	at org.zkoss.zul.Datebox.getRealSymbols(Datebox.java:756)
	at org.zkoss.zul.Datebox.renderProperties(Datebox.java:1031)
	at org.zkoss.zk.ui.AbstractComponent.redraw(AbstractComponent.java:2175)
	at org.zkoss.zk.ui.AbstractComponent.redrawChildren(AbstractComponent.java:2266)
	at org.zkoss.zk.ui.AbstractComponent.redraw(AbstractComponent.java:2207)
	at org.zkoss.zk.ui.AbstractComponent.redrawChildren(AbstractComponent.java:2266)
...