2.7.14856: UnitSeparator#getComparatorUnitCategories:129 - java.lang.NullPointerException

[tripleabuilderbot]

User Description

The battle calculator doesn't work. It says NullPointerException when I click it in the menu

Map

total_world_war / Total World War: December 1941 3.0

TripleA Version

2.7.14856

Java Version

11.0.19

Operating System

Windows 11

Heap Size

3928M

Stack Trace

Exception: java.lang.NullPointerException 
java.lang.Exception
	at games.strategy.triplea.util.UnitSeparator.getComparatorUnitCategories(UnitSeparator.java:129)
	at games.strategy.triplea.util.UnitSeparator.sortUnitCategories(UnitSeparator.java:114)
	at games.strategy.triplea.odds.calculator.PlayerUnitsPanel.init(PlayerUnitsPanel.java:85)
	at games.strategy.triplea.odds.calculator.BattleCalculatorPanel.setAttackingUnits(BattleCalculatorPanel.java:699)
	at games.strategy.triplea.odds.calculator.BattleCalculatorPanel.lambda$new$1(BattleCalculatorPanel.java:378)
	at java.desktop/javax.swing.JComboBox.fireActionEvent(JComboBox.java:1264)
	at java.desktop/javax.swing.JComboBox.setSelectedItem(JComboBox.java:589)
	at games.strategy.triplea.odds.calculator.BattleCalculatorPanel.setAttacker(BattleCalculatorPanel.java:518)
	at java.base/java.util.Optional.ifPresent(Optional.java:183)
	at games.strategy.triplea.odds.calculator.BattleCalculatorPanel.setupAttackerAndDefender(BattleCalculatorPanel.java:507)
	at games.strategy.triplea.odds.calculator.BattleCalculatorPanel.<init>(BattleCalculatorPanel.java:473)
	at games.strategy.triplea.odds.calculator.BattleCalculatorDialog.show(BattleCalculatorDialog.java:55)
	at games.strategy.triplea.ui.menubar.GameMenu.lambda$new$1(GameMenu.java:83)
	at org.triplea.swing.SwingAction$1.actionPerformed(SwingAction.java:60)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.AbstractButton.doClick(AbstractButton.java:369)
	at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1020)
	at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1064)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6635)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
	at java.desktop/java.awt.Component.processEvent(Component.java:6400)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5011)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4918)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4547)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4488)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2772)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4843)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)