Exception: Cannot invoke "Object.getClass()" because "$this" is null (class java.lang.NullPointerException)

Stack Trace:
scala.collection.ArrayOps$.filter$extension(ArrayOps.scala:202)
org.nlogo.workspace.AbstractWorkspaceTraits$.org$nlogo$workspace$AbstractWorkspaceTraits$Extensions$$_$_$$anonfun$3(AbstractWorkspaceScala.scala:354)
scala.collection.immutable.List.flatMap(List.scala:294)
scala.collection.immutable.List.flatMap(List.scala:79)
org.nlogo.workspace.AbstractWorkspaceTraits$Extensions.getExtensionPathMappings(AbstractWorkspaceScala.scala:354)
org.nlogo.workspace.AbstractWorkspaceTraits$Extensions.getExtensionPathMappings$(AbstractWorkspaceScala.scala:351)
org.nlogo.workspace.AbstractWorkspaceScala.getExtensionPathMappings(AbstractWorkspaceScala.scala:25)
org.nlogo.app.App.openLibrariesDialog$lzyINIT1$$anonfun$3(App.scala:779)
org.nlogo.app.OpenLibrariesDialog.createDialog(ToolActions.scala:94)
org.nlogo.app.ShowDialogAction.createdDialog$lzyINIT1(ToolActions.scala:25)
org.nlogo.app.ShowDialogAction.createdDialog(ToolActions.scala:25)
org.nlogo.app.ShowDialogAction.syncTheme(ToolActions.scala:33)
org.nlogo.app.App.syncWindowThemes(App.scala:965)
org.nlogo.app.App.handle(App.scala:1083)
org.nlogo.window.Events$LoadEndEvent.beHandledBy(Events.java:505)
org.nlogo.window.Event.doRaise(Event.java:206)
org.nlogo.window.Event.raise(Event.java:122)
org.nlogo.window.ReconfigureWorkspaceUI$Loader.loadHelper$$anonfun$1(ReconfigureWorkspaceUI.scala:42)
scala.runtime.function.JProcedure1.apply(JProcedure1.java:15)
scala.runtime.function.JProcedure1.apply(JProcedure1.java:10)
scala.collection.immutable.List.foreach(List.scala:334)
org.nlogo.window.ReconfigureWorkspaceUI$Loader.loadHelper(ReconfigureWorkspaceUI.scala:42)
org.nlogo.window.ReconfigureWorkspaceUI$.apply(ReconfigureWorkspaceUI.scala:20)
org.nlogo.app.FileManager.org$nlogo$app$FileManager$$runLoad(FileManager.scala:404)
org.nlogo.app.FileManager.openFromModel(FileManager.scala:469)
org.nlogo.app.FileManager.newModel(FileManager.scala:424)
org.nlogo.app.App.loadDefaultModel(App.scala:753)
org.nlogo.app.App.org$nlogo$app$App$$finishStartup(App.scala:539)
org.nlogo.app.App$.mainWithAppHandler$$anonfun$1(App.scala:202)
java.desktop@21.0.7/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:308)
java.desktop@21.0.7/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:773)
java.desktop@21.0.7/java.awt.EventQueue$4.run(EventQueue.java:720)
java.desktop@21.0.7/java.awt.EventQueue$4.run(EventQueue.java:714)
java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:87)
java.desktop@21.0.7/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
java.desktop@21.0.7/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
java.desktop@21.0.7/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
java.desktop@21.0.7/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
java.desktop@21.0.7/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
java.desktop@21.0.7/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
java.desktop@21.0.7/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)