Exception in thread "AWT-EventQueue-0" - is this an error or not?

[carolbooth2]

carol@carol-Lenovo-V110-15IKB:~/certify$ java -cp Certify.jar Main

2024-12-17 11:25:19 DEBUG Globals - Check if directory /home/carol/.certify exists.
2024-12-17 11:25:19 DEBUG Globals - Check if file /home/carol/.certify/system.properties
2024-12-17 11:25:19 DEBUG Globals - Check if directory /home/carol/.certify exists.
2024-12-17 11:25:19 DEBUG Globals - Check if file /home/carol/.certify/Workshops.json
2024-12-17 11:25:19 DEBUG Globals - Check if directory /home/carol/.certify exists.
2024-12-17 11:25:19 DEBUG Globals - Check if file /home/carol/.certify/Lessons.json
2024-12-17 11:25:19 DEBUG Globals - Check if directory /home/carol/.certify exists.
2024-12-17 11:25:19 DEBUG Globals - Check if file /home/carol/.certify/Learners.json
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: Cannot invoke "String.equals(Object)" because "view" is null
	at com.jannetta.certify.controller.Globals.learnersSetView(Globals.java:108)
	at com.jannetta.certify.view.LearnerPanel.actionPerformed(LearnerPanel.java:238)
	at java.desktop/javax.swing.JComboBox.fireActionEvent(JComboBox.java:1294)
	at java.desktop/javax.swing.JComboBox.setSelectedItem(JComboBox.java:619)
	at java.desktop/javax.swing.JComboBox.setSelectedIndex(JComboBox.java:650)
	at com.jannetta.certify.view.LearnerPanel.actionPerformed(LearnerPanel.java:268)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2314)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:407)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6621)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3398)
	at java.desktop/java.awt.Component.processEvent(Component.java:6386)
	at java.desktop/java.awt.Container.processEvent(Container.java:2266)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4996)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2324)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4828)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4948)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4575)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4516)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2310)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2780)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4828)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:775)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:720)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:714)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:98)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:747)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:744)
	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)