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java.lang.NullPointerException: 	at org.apache.karaf.cellar.features.FeaturesSynchronizer.getSyncPolicy(FeaturesSynchronizer.java:222)	at org.apache.karaf.cellar.features.FeaturesSynchronizer.sync(FeaturesSynchronizer.java:65)	at org.apache.karaf.cellar.features.FeaturesSynchronizer.init(FeaturesSynchronizer.java:48)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:622)	at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:297)	at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:958)	at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:712)	at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:824)	at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:787)	at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)	at java.util.concurrent.FutureTask.run(FutureTask.java:166)	at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)	at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:245)	at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:183)	at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:682)	at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:377)	at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:269)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)	at java.util.concurrent.FutureTask.run(FutureTask.java:166)	at org.apache.aries.blueprint.container.ExecutorServiceWrapper.run(ExecutorServiceWrapper.java:106)	at org.apache.aries.blueprint.utils.threading.impl.DiscardableRunnable.run(DiscardableRunnable.java:48)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)	at java.util.concurrent.FutureTask.run(FutureTask.java:166)	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:165)	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at java.lang.Thread.run(Thread.java:701)