12-Jun-2018 23:39:39.886 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log SessionListener: contextDestroyed()
12-Jun-2018 23:39:39.886 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log ContextListener: contextDestroyed()
12-Jun-2018 23:39:39.912 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log Destroying Spring FrameworkServlet 'openmrs'
12-Jun-2018 23:39:40.337 SEVERE [localhost-startStop-2] org.apache.catalina.core.StandardContext.listenerStop Exception sending context destroyed event to listener instance of class [org.openmrs.web.Listener]
 java.lang.NullPointerException
	at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:57)
	at sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFieldAccessorImpl.java:36)
	at java.lang.reflect.Field.get(Field.java:393)
	at org.openmrs.util.MemoryLeakUtil.shutdownMysqlCancellationTimer(MemoryLeakUtil.java:42)
	at org.openmrs.web.Listener.contextDestroyed(Listener.java:604)
	at org.apache.catalina.core.StandardContext.listenerStop(StandardContext.java:4792)
	at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5429)
	at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:226)
	at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1435)
	at org.apache.catalina.core.ContainerBase$StopChild.call(ContainerBase.java:1424)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

12-Jun-2018 23:39:40.337 INFO [localhost-startStop-2] org.apache.catalina.core.ApplicationContext.log Shutting down log4j
12-Jun-2018 23:39:48.122 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log No Spring WebApplicationInitializer types detected on classpath
12-Jun-2018 23:39:48.598 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log Initializing log4j from [classpath:log4j.xml]
12-Jun-2018 23:40:11.871 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log ContextListener: contextInitialized()
12-Jun-2018 23:40:11.872 INFO [localhost-startStop-1] org.apache.catalina.core.ApplicationContext.log SessionListener: contextInitialized()