Concurrency issue

[mnlipp]

Problem invoking handler with ConletDeleted#1 [channels=[WebConsole#1{ConsoleConnection#17}↔guiHttp{WebAppMsgChannel#579}↔…]]: java.util.ConcurrentModificationException

java.util.ConcurrentModificationException
	at java.base/java.util.WeakHashMap$HashIterator.nextEntry(Unknown Source)
	at java.base/java.util.WeakHashMap$EntryIterator.next(Unknown Source)
	at java.base/java.util.WeakHashMap$EntryIterator.next(Unknown Source)
	at org.jgrapes.webconsole.base.AbstractConlet.onConletDeleted(AbstractConlet.java:929)
	at org.jgrapes.core.internal.HandlerReference.invoke(HandlerReference.java:134)
	at org.jgrapes.core.internal.EventProcessor.invokeHandlers(EventProcessor.java:213)
	at org.jgrapes.core.internal.EventProcessor.run(EventProcessor.java:180)
	at java.base/java.util.concurrent.ThreadPerTaskExecutor$TaskRunner.run(Unknown Source)
	at java.base/java.lang.VirtualThread.run(Unknown Source)