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java.lang.IllegalStateException: Shutdown in progress	at java.lang.ApplicationShutdownHooks.add(Unknown Source)	at java.lang.Runtime.addShutdownHook(Unknown Source)	at org.apache.catalina.startup.Catalina.start(Catalina.java:699)	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(Bootstrap.java:322)	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:451)	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 com.comsol.util.application.ServerApplication.a(Unknown Source)	at com.comsol.util.application.ServerApplication.a(Unknown Source)	at com.comsol.util.application.ServerApplication.a(Unknown Source)	at com.comsol.util.application.ServerApplication.main(Unknown Source)