java.lang.UnsupportedOperationException: null

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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.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.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.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.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$000(Activator.java:49)
at org.apache.felix.utils.extender.AbstractExtender.createExtension(AbstractExtender.java:259)
at org.osgi.util.tracker.BundleTracker$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.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.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)

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