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java.lang.NullPointerException: 	at org.springframework.osgi.io.internal.resolver.PackageAdminResolver.addExportedPackages(PackageAdminResolver.java:198)	at org.springframework.osgi.io.internal.resolver.PackageAdminResolver.getImportedBundles(PackageAdminResolver.java:78)	at org.springframework.osgi.extender.internal.activator.SpringTypeCompatibilityChecker.checkCompatibility(SpringTypeCompatibilityChecker.java:71)	at org.springframework.osgi.extender.internal.activator.ContextLoaderListener.maybeCreateApplicationContextFor(ContextLoaderListener.java:721)	at org.springframework.osgi.extender.internal.activator.ContextLoaderListener.start(ContextLoaderListener.java:416)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl$2.run(BundleContextImpl.java:999)	at java.security.AccessController.doPrivileged(Native Method)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:993)	at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:974)	at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:346)	at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:350)	at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1118)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:634)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:508)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:282)	at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:468)	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:195)	at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:297)