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java.util.concurrent.ExecutionException: java.lang.NullPointerException at java.util.concurrent.FutureTask.report(FutureTask.java:122)[:1.8.0] at java.util.concurrent.FutureTask.get(FutureTask.java:206)[:1.8.0] at org.eclipse.smarthome.core.common.SafeMethodCaller.callAsynchronous(SafeMethodCaller.java:179)[98:org.eclipse.smarthome.core:0.8.0.b5] at org.eclipse.smarthome.core.common.SafeMethodCaller.call(SafeMethodCaller.java:72)[98:org.eclipse.smarthome.core:0.8.0.b5] at org.eclipse.smarthome.core.common.SafeMethodCaller.call(SafeMethodCaller.java:56)[98:org.eclipse.smarthome.core:0.8.0.b5] at org.eclipse.smarthome.core.thing.internal.ThingManager.receiveCommand(ThingManager.java:368)[104:org.eclipse.smarthome.core.thing:0.8.0.b5] at org.eclipse.smarthome.core.items.events.AbstractItemEventSubscriber.receive(AbstractItemEventSubscriber.java:46)[98:org.eclipse.smarthome.core:0.8.0.b5] at org.eclipse.smarthome.core.internal.events.OSGiEventManager$1.call(OSGiEventManager.java:192)[98:org.eclipse.smarthome.core:0.8.0.b5] at org.eclipse.smarthome.core.internal.events.OSGiEventManager$1.call(OSGiEventManager.java:1)[98:org.eclipse.smarthome.core:0.8.0.b5] at org.eclipse.smarthome.core.common.SafeMethodCaller$CallableWrapper.call(SafeMethodCaller.java:170)[98:org.eclipse.smarthome.core:0.8.0.b5] at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0] at java.lang.Thread.run(Thread.java:744)[:1.8.0]Caused by: java.lang.NullPointerException at org.eclipse.smarthome.binding.sonos.handler.ZonePlayerHandler.handleCommand(ZonePlayerHandler.java:292)[213:org.eclipse.smarthome.binding.sonos:0.8.0.b5] at org.eclipse.smarthome.core.thing.internal.ThingManager$2.call(ThingManager.java:371)[104:org.eclipse.smarthome.core.thing:0.8.0.b5] at org.eclipse.smarthome.core.thing.internal.ThingManager$2.call(ThingManager.java:1)[104:org.eclipse.smarthome.core.thing:0.8.0.b5] ... 5 more