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java.lang.UnsupportedOperationException: null	at java.util.concurrent.CopyOnWriteArrayList$COWIterator.set(CopyOnWriteArrayList.java:1049)	at java.util.Collections.sort(Collections.java:221)	at com.adobe.acs.commons.httpcache.engine.impl.HttpCacheEngineImpl.bindHttpCacheConfig(HttpCacheEngineImpl.java:150)	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:606)	at org.apache.felix.scr.impl.helper.BaseMethod.invokeMethod(BaseMethod.java:222)	at org.apache.felix.scr.impl.helper.BaseMethod.access$500(BaseMethod.java:37)	at org.apache.felix.scr.impl.helper.BaseMethod$Resolved.invoke(BaseMethod.java:615)	at org.apache.felix.scr.impl.helper.BaseMethod.invoke(BaseMethod.java:499)	at org.apache.felix.scr.impl.helper.BindMethod.invoke(BindMethod.java:41)	at org.apache.felix.scr.impl.manager.DependencyManager.doInvokeBindMethod(DependencyManager.java:1610)	at org.apache.felix.scr.impl.manager.DependencyManager.open(DependencyManager.java:1448)	at org.apache.felix.scr.impl.manager.SingleComponentManager.createImplementationObject(SingleComponentManager.java:265)	at org.apache.felix.scr.impl.manager.SingleComponentManager.createComponent(SingleComponentManager.java:113)	at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:832)	at org.apache.felix.scr.impl.manager.SingleComponentManager.getServiceInternal(SingleComponentManager.java:799)	at org.apache.felix.scr.impl.manager.SingleComponentManager.getService(SingleComponentManager.java:749)	at org.apache.felix.framework.ServiceRegistrationImpl.getFactoryUnchecked(ServiceRegistrationImpl.java:343)	at org.apache.felix.framework.ServiceRegistrationImpl.getService(ServiceRegistrationImpl.java:243)	at org.apache.felix.framework.ServiceRegistry.getService(ServiceRegistry.java:357)	at org.apache.felix.framework.Felix.getService(Felix.java:3671)	at org.apache.felix.framework.BundleContextImpl.getService(BundleContextImpl.java:470)	at org.osgi.util.tracker.ServiceTracker.addingService(ServiceTracker.java:414)	at org.apache.aries.jmx.whiteboard.Activator$MBeanTracker.addingService(Activator.java:101)	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:941)	at org.osgi.util.tracker.ServiceTracker$Tracked.customizerAdding(ServiceTracker.java:870)	at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)	at org.osgi.util.tracker.ServiceTracker$Tracked.serviceChanged(ServiceTracker.java:901)	at org.apache.felix.framework.util.EventDispatcher.invokeServiceListenerCallback(EventDispatcher.java:987)	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:838)	at org.apache.felix.framework.util.EventDispatcher.fireServiceEvent(EventDispatcher.java:545)	at org.apache.felix.framework.Felix.fireServiceEvent(Felix.java:4547)	at org.apache.felix.framework.Felix.registerService(Felix.java:3521)	at org.apache.felix.framework.BundleContextImpl.registerService(BundleContextImpl.java:348)	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:869)	at org.apache.felix.scr.impl.manager.AbstractComponentManager$3.register(AbstractComponentManager.java:857)	at org.apache.felix.scr.impl.manager.RegistrationManager.changeRegistration(RegistrationManager.java:133)	at org.apache.felix.scr.impl.manager.AbstractComponentManager.registerService(AbstractComponentManager.java:915)	at org.apache.felix.scr.impl.manager.AbstractComponentManager.activateInternal(AbstractComponentManager.java:715)	at org.apache.felix.scr.impl.manager.AbstractComponentManager.enable(AbstractComponentManager.java:399)	at org.apache.felix.scr.impl.config.ConfigurableComponentHolder.enableComponents(ConfigurableComponentHolder.java:669)	at org.apache.felix.scr.impl.BundleComponentActivator.initialEnable(BundleComponentActivator.java:184)	at org.apache.felix.scr.impl.Activator.loadComponents(Activator.java:332)	at org.apache.felix.scr.impl.Activator.access$000(Activator.java:49)	at org.apache.felix.scr.impl.Activator$ScrExtension.start(Activator.java:257)	at org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:259)	at org.apache.felix.utils.extender.AbstractExtender.modifiedBundle(AbstractExtender.java:232)	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:482)	at org.osgi.util.tracker.BundleTracker$Tracked.customizerModified(BundleTracker.java:415)	at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:232)	at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)	at org.apache.felix.framework.util.EventDispatcher.invokeBundleListenerCallback(EventDispatcher.java:913)	at org.apache.felix.framework.util.EventDispatcher.fireEventImmediately(EventDispatcher.java:834)	at org.apache.felix.framework.util.EventDispatcher.fireBundleEvent(EventDispatcher.java:516)	at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4531)	at org.apache.felix.framework.Felix.startBundle(Felix.java:2169)	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:977)	at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:964)	at org.apache.sling.installer.core.impl.tasks.BundleStartTask.execute(BundleStartTask.java:93)	at org.apache.sling.installer.core.impl.OsgiInstallerImpl.doExecuteTasks(OsgiInstallerImpl.java:847)	at org.apache.sling.installer.core.impl.OsgiInstallerImpl.executeTasks(OsgiInstallerImpl.java:689)	at org.apache.sling.installer.core.impl.OsgiInstallerImpl.run(OsgiInstallerImpl.java:265)	at java.lang.Thread.run(Thread.java:745)