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java.lang.NullPointerException: 	at org.apache.catalina.connector.MapperListener.destroy(	at org.apache.catalina.connector.Connector.stop(	at org.apache.catalina.core.StandardService.stop(	at org.apache.catalina.core.StandardServer.stop(	at org.apache.catalina.startup.Catalina.stop(	at org.apache.catalina.startup.Catalina.start(	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.apache.catalina.startup.Bootstrap.start(	at org.apache.catalina.startup.Bootstrap.main(