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java.lang.NullPointerException: 	at org.springframework.osgi.util.internal.MapBasedDictionary.put(MapBasedDictionary.java:142)	at org.springframework.osgi.web.context.support.OsgiBundleXmlWebApplicationContext.customizeApplicationContextServiceProperties(OsgiBundleXmlWebApplicationContext.java:176)	at org.springframework.osgi.context.support.AbstractOsgiBundleApplicationContext.publishContextAsOsgiServiceIfNecessary(AbstractOsgiBundleApplicationContext.java:283)	at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.finishRefresh(AbstractDelegatedExecutionApplicationContext.java:307)	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:384)	at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.normalRefresh(AbstractDelegatedExecutionApplicationContext.java:143)	at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$NoDependenciesWaitRefreshExecutor.refresh(AbstractDelegatedExecutionApplicationContext.java:70)	at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.refresh(AbstractDelegatedExecutionApplicationContext.java:131)	at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3843)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4350)	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:791)	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:771)	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:525)	at org.springframework.osgi.web.deployer.tomcat.TomcatWarDeployer.startCatalinaContext(TomcatWarDeployer.java:144)	at org.springframework.osgi.web.deployer.tomcat.TomcatWarDeployer.startDeployment(TomcatWarDeployer.java:133)	at org.springframework.osgi.web.deployer.support.AbstractWarDeployer.deploy(AbstractWarDeployer.java:93)	at org.springframework.osgi.web.extender.internal.activator.WarLoaderListener$DeploymentManager$DeployTask.run(WarLoaderListener.java:141)	at org.springframework.scheduling.timer.DelegatingTimerTask.run(DelegatingTimerTask.java:66)	at java.util.TimerThread.mainLoop(Timer.java:512)	at java.util.TimerThread.run(Timer.java:462)