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java.lang.NullPointerException: 	at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:322)	at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:182)	at org.apache.catalina.startup.ContextConfig.processJarsForWebFragments(ContextConfig.java:1898)	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1131)	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:783)	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:307)	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:95)	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5213)	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:725)	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:701)	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:717)	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1092)	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1834)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)