2.0.20234: MutableProperty#lambda$noGetter$2:46 - UnsupportedOperationException

[tripleabuilderbot]

Log Message

No Getter has been defined!

TripleA Version

2.0.20234

Java Version

11.0.6

Operating System

Linux

Exception

java.lang.UnsupportedOperationException: No Getter has been defined!

Stack Trace

java.lang.UnsupportedOperationException: No Getter has been defined!
	at games.strategy.engine.data.MutableProperty.lambda$noGetter$2(MutableProperty.java:46)
	at games.strategy.engine.data.MutableProperty.getValue(MutableProperty.java:103)
	at java.base/java.util.Optional.map(Optional.java:265)
	at games.strategy.engine.data.DefaultAttachment.getRawPropertyString(DefaultAttachment.java:103)
	at games.strategy.triplea.attachments.TriggerAttachment.getPropertyChangeHistoryStartEvent(TriggerAttachment.java:1512)
	at games.strategy.triplea.attachments.TriggerAttachment.triggerUnitPropertyChange(TriggerAttachment.java:1902)
	at games.strategy.triplea.delegate.TechActivationDelegate.start(TechActivationDelegate.java:77)
	at games.strategy.engine.framework.ServerGame.startStep(ServerGame.java:520)
	at games.strategy.engine.framework.ServerGame.runStep(ServerGame.java:399)
	at games.strategy.engine.framework.ServerGame.startGame(ServerGame.java:297)
	at games.strategy.engine.framework.startup.launcher.LocalLauncher.launchInternal(LocalLauncher.java:61)
	at games.strategy.engine.framework.startup.launcher.LocalLauncher.launchInternal(LocalLauncher.java:34)
	at games.strategy.engine.framework.startup.launcher.AbstractLauncher.lambda$launch$0(AbstractLauncher.java:16)
	at java.base/java.lang.Thread.run(Thread.java:834)

[trevan]

Duplicate of #6961