Exception in log while shutting down

12:47:05,228 SEVERE [org.jboss.forge.addon.ui.impl.controller.AbstractCommandController] (Aesh Process Loop 724826075) Error while notifying listeners: java.lang.IllegalStateException: Cannot access this method until Furnace is running. Call .start() or .startAsync() first.
	at org.jboss.forge.furnace.impl.FurnaceImpl.assertIsAlive(FurnaceImpl.java:504) [furnace-2.20.2-SNAPSHOT.jar:2.20.2-SNAPSHOT]
	at org.jboss.forge.furnace.impl.FurnaceImpl.getAddonRegistry(FurnaceImpl.java:350) [furnace-2.20.2-SNAPSHOT.jar:2.20.2-SNAPSHOT]
	at org.jboss.forge.addon.resource.ResourceFactoryImpl.getAddonRegistry(ResourceFactoryImpl.java:136) [resources-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.resource.ResourceFactoryImpl.getGenerators(ResourceFactoryImpl.java:69) [resources-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.resource.ResourceFactoryImpl.create(ResourceFactoryImpl.java:47) [resources-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.resource.AbstractFileResource.getParent(AbstractFileResource.java:66) [resources-api-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.resource.DirectoryResourceImpl.getParent(DirectoryResourceImpl.java:168) [resources-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.resource.DirectoryResourceImpl.getParent(DirectoryResourceImpl.java:25) [resources-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.projects.impl.ProjectFactoryImpl.allDirectoriesOnPath(ProjectFactoryImpl.java:187) [projects-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.projects.impl.ProjectFactoryImpl.findProject(ProjectFactoryImpl.java:126) [projects-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.projects.impl.ProjectFactoryImpl.findProject(ProjectFactoryImpl.java:107) [projects-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.projects.Projects.getSelectedProject(Projects.java:40) [projects-api-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.projects.ui.ProjectBuildStatusListener.postCommandExecuted(ProjectBuildStatusListener.java:41) [projects-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_51]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_51]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_51]
	at java.lang.reflect.Method.invoke(Method.java:497) [rt.jar:1.8.0_51]
	at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor$1.call(ClassLoaderInterceptor.java:87) [furnace-proxy-2.20.2-SNAPSHOT.jar:2.20.2-SNAPSHOT]
	at org.jboss.forge.furnace.util.ClassLoaders.executeIn(ClassLoaders.java:42) [furnace-api-2.20.2-SNAPSHOT.jar:2.20.2-SNAPSHOT]
	at org.jboss.forge.furnace.proxy.ClassLoaderInterceptor.invoke(ClassLoaderInterceptor.java:103) [furnace-proxy-2.20.2-SNAPSHOT.jar:2.20.2-SNAPSHOT]
	at org.jboss.forge.addon.projects.ui.ProjectBuildStatusListener_$$_javassist_dcd80bb2-ba56-473a-b0e5-9935fef000c6.postCommandExecuted(ProjectBuildStatusListener_$$_javassist_dcd80bb2-ba56-473a-b0e5-9935fef000c6.java) [projects-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.ui.impl.controller.AbstractCommandController.firePostCommandExecuted(AbstractCommandController.java:144) [ui-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.ui.impl.controller.SingleCommandControllerImpl.execute(SingleCommandControllerImpl.java:94) [ui-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.shell.aesh.CommandAdapter.execute(CommandAdapter.java:98) [shell-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.forge.addon.shell.ShellImpl$ForgeInterruptHook.handleInterrupt(ShellImpl.java:325) [shell-impl-2.17.1-SNAPSHOT.jar:2.17.1-SNAPSHOT]
	at org.jboss.aesh.console.Console$3.handleInterrupt(Console.java:235) [aesh-0.61.jar:0.61]
	at org.jboss.aesh.console.AeshInputProcessor.parseOperation(AeshInputProcessor.java:179) [aesh-0.61.jar:0.61]
	at org.jboss.aesh.console.Console.processInternalOperation(Console.java:698) [aesh-0.61.jar:0.61]
	at org.jboss.aesh.console.Console.execute(Console.java:688) [aesh-0.61.jar:0.61]
	at org.jboss.aesh.console.Console.access$1000(Console.java:73) [aesh-0.61.jar:0.61]
	at org.jboss.aesh.console.Console$6.run(Console.java:593) [aesh-0.61.jar:0.61]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [rt.jar:1.8.0_51]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [rt.jar:1.8.0_51]
	at java.lang.Thread.run(Thread.java:745) [rt.jar:1.8.0_51]