java.util.concurrent.CancellationException: Operation was cancelled
   at org.jboss.threads.AsyncFutureTask.operationCancelled(AsyncFutureTask.java:70)
   at org.jboss.threads.AsyncFutureTask.get(AsyncFutureTask.java:280)
   at org.jboss.as.controller.client.impl.AbstractDelegatingAsyncFuture.get(AbstractDelegatingAsyncFuture.java:62)
   at org.jboss.as.controller.client.impl.ConvertingDelegatingAsyncFuture.get(ConvertingDelegatingAsyncFuture.java:69)
   at org.jboss.as.controller.client.impl.ConvertingDelegatingAsyncFuture.get(ConvertingDelegatingAsyncFuture.java:41)
   at org.netbeans.modules.javaee.wildfly.ide.commands.WildflyClient.shutdownServer(WildflyClient.java:294)
   at org.netbeans.modules.javaee.wildfly.ide.WildflyStopRunnable.run(WildflyStopRunnable.java:98)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)