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java.lang.ExceptionInInitializerError at org.apache.catalina.core.StandardContext.start( at com.sun.webserver.connector.nsapi.WebModule.start( at org.apache.catalina.core.ContainerBase.start( at org.apache.catalina.core.StandardHost.start( at org.apache.catalina.core.ContainerBase.start( at org.apache.catalina.core.StandardEngine.start( at org.apache.catalina.startup.Embedded.start( at com.sun.enterprise.web.PwcWebContainer.onStartup( at com.sun.webserver.connector.nsapi.WebContainer.start( at com.sun.webserver.init.J2EERunner.confPostInit( by: java.lang.NullPointerException at org.apache.catalina.util.ExtensionValidator.<clinit>( ... 10 more