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java.lang.NullPointerException at org.wso2.carbon.user.core.config.RealmConfigXMLProcessor.buildRealmConfiguration(RealmConfigXMLProcessor.java:367) at org.wso2.carbon.user.core.config.RealmConfigXMLProcessor.buildRealmConfiguration(RealmConfigXMLProcessor.java:281) at org.wso2.carbon.user.core.common.DefaultRealmService.buildBootStrapRealmConfig(DefaultRealmService.java:136) at org.wso2.carbon.user.core.common.DefaultRealmService.<init>(DefaultRealmService.java:84) at org.wso2.carbon.user.core.common.DefaultRealmService.<init>(DefaultRealmService.java:113) at org.wso2.carbon.user.core.internal.Activator.startDeploy(Activator.java:68) at org.wso2.carbon.user.core.internal.BundleCheckActivator.start(BundleCheckActivator.java:61) at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711) at java.security.AccessController.doPrivileged(Native Method) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683) at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381) at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:390) at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1176) at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559) at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544) at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457) at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243) at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438) at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230) at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)