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java.lang.NullPointerException: 	at com.atlassian.spring.container.ContainerManager.getComponent(ContainerManager.java:32)	at com.atlassian.upgrade.UpgradeLauncherServletContextListener.contextInitialized(UpgradeLauncherServletContextListener.java:21)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3727)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4162)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)	at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)	at org.apache.catalina.core.StandardService.start(StandardService.java:450)	at org.apache.catalina.core.StandardServer.start(StandardServer.java:700)	at org.apache.catalina.startup.Catalina.start(Catalina.java:551)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:585)	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:275)	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)