org.apache.jackrabbit.mk.api.MicroKernelException: java.lang.Exception: cannot branch off a private branch
 	at org.apache.jackrabbit.mk.core.MicroKernelImpl.branch(MicroKernelImpl.java:508)
 	at org.apache.jackrabbit.oak.kernel.KernelNodeStoreBranch.<init>(KernelNodeStoreBranch.java:56)
 	at org.apache.jackrabbit.oak.kernel.KernelNodeStore.branch(KernelNodeStore.java:101)
 	at org.apache.jackrabbit.oak.core.RootImpl.refresh(RootImpl.java:160)
 	at org.apache.jackrabbit.oak.core.RootImpl.<init>(RootImpl.java:111)
 	at org.apache.jackrabbit.oak.core.ContentSessionImpl.getCurrentRoot(ContentSessionImpl.java:78)
 	at org.apache.jackrabbit.oak.jcr.SessionDelegate.<init>(SessionDelegate.java:94)
 	at org.apache.jackrabbit.oak.jcr.RepositoryImpl.login(RepositoryImpl.java:137)
 	at org.apache.jackrabbit.oak.sling.SlingRepositoryImpl.login(SlingRepositoryImpl.java:61)
 	at org.apache.jackrabbit.oak.sling.SlingRepositoryImpl.loginAdministrative(SlingRepositoryImpl.java:75)
 	at org.apache.sling.jcr.base.internal.loader.Loader.getSession(Loader.java:336)
 	at org.apache.sling.jcr.base.internal.loader.Loader.registerNodeTypes(Loader.java:264)
 	at org.apache.sling.jcr.base.internal.loader.Loader.registerBundleInternal(Loader.java:237)
 	at org.apache.sling.jcr.base.internal.loader.Loader.registerBundle(Loader.java:166)
 	at org.apache.sling.jcr.base.internal.loader.Loader.<init>(Loader.java:78)
 	at org.apache.sling.jcr.base.AbstractNamespaceMappingRepository.setup(AbstractNamespaceMappingRepository.java:48)
 	at org.apache.jackrabbit.oak.sling.SlingRepositoryImpl.<init>(SlingRepositoryImpl.java:41)
 	at org.apache.jackrabbit.oak.sling.Activator.addingService(Activator.java:84)
 	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:896)
 	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:261)
 	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:233)
 	at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:840)
 	at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:871)
 	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:733)
 	at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:662)
 	at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:3771)
 	at org.apache.felix.framework.Felix.registerService(Felix.java:2877)
 	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:251)
 	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:229)
 	at org.apache.jackrabbit.oak.osgi.Activator.addingService(Activator.java:86)
 	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:896)
 	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:261)
 	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:233)
 	at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:840)
 	at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:871)
 	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:733)
 	at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:662)
 	at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:3771)
 	at org.apache.felix.framework.Felix.registerService(Felix.java:2877)
 	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:251)
 	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:456)
 	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerComponentService(AbstractComponentManager.java:508)
 	at org.apache.felix.scr.impl.manager.AbstractComponentManager$Unsatisfied.activate(AbstractComponentManager.java:1157)
 	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:334)
 	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:158)
 	at org.apache.felix.scr.impl.config.ImmediateComponentHolder.enableComponents(ImmediateComponentHolder.java:313)
 	at org.apache.felix.scr.impl.BundleComponentActivator.loadDescriptor(BundleComponentActivator.java:241)
 	at org.apache.felix.scr.impl.BundleComponentActivator.initialize(BundleComponentActivator.java:147)
 	at org.apache.felix.scr.impl.BundleComponentActivator.<init>(BundleComponentActivator.java:111)
 	at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:274)
 	at org.apache.felix.scr.impl.Activator.bundleChanged(Activator.java:192)
 	at org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:807)
 	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:729)
 	at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:610)
 	at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:3760)
 	at org.apache.felix.framework.Felix.startBundle(Felix.java:1780)
 	at org.apache.felix.framework.Felix.setActiveStartLevel(Felix.java:1156)
 	at org.apache.felix.framework.StartLevelImpl.run(StartLevelImpl.java:267)
 	at java.lang.Thread.run(Thread.java:662)
 Caused by: java.lang.Exception: cannot branch off a private branch
 	at org.apache.jackrabbit.mk.model.CommitBuilder.doCommit(CommitBuilder.java:101)
 	at org.apache.jackrabbit.mk.core.MicroKernelImpl.branch(MicroKernelImpl.java:506)
 	... 58 more