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This exception has no message.
java.lang.NullPointerException: 	at com.atlassian.jira.ComponentManager.getComponentInstanceOfType(ComponentManager.java:499)	at com.atlassian.jira.upgrade.PluginUpgradeLauncher.getPluginEventManager(PluginUpgradeLauncher.java:39)	at com.atlassian.jira.upgrade.PluginUpgradeLauncher.start(PluginUpgradeLauncher.java:28)	at com.atlassian.jira.startup.DefaultJiraLauncher.start(DefaultJiraLauncher.java:41)	at com.atlassian.jira.startup.LauncherContextListener$1.create(LauncherContextListener.java:50)	at com.atlassian.jira.startup.LauncherContextListener$1.create(LauncherContextListener.java:45)	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.get(MultiTenantComponentMapImpl.java:121)	at com.atlassian.multitenant.impl.MultiTenantComponentMapImpl.onTenantStart(MultiTenantComponentMapImpl.java:165)	at com.atlassian.multitenant.impl.DefaultMultiTenantManager$1.consume(DefaultMultiTenantManager.java:134)	at com.atlassian.multitenant.impl.DefaultMultiTenantManager$1.consume(DefaultMultiTenantManager.java:131)	at com.atlassian.multitenant.impl.DefaultMultiTenantManager.runForEachListener(DefaultMultiTenantManager.java:256)	at com.atlassian.multitenant.impl.DefaultMultiTenantManager.startTenant(DefaultMultiTenantManager.java:130)	at com.atlassian.multitenant.impl.DefaultMultiTenantManager.startAll(DefaultMultiTenantManager.java:203)	at com.atlassian.jira.startup.LauncherContextListener.contextInitialized(LauncherContextListener.java:77)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3934)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4429)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)	at org.apache.catalina.core.StandardHost.start(StandardHost.java:722)	at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1045)	at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:443)	at org.apache.catalina.core.StandardService.start(StandardService.java:516)	at org.apache.catalina.core.StandardServer.start(StandardServer.java:710)	at org.apache.catalina.startup.Catalina.start(Catalina.java:583)	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:597)	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)