java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at java.io.File.(File.java:222)
at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.initializePort(WebServiceTesterServlet.java:524)
at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.doGet(WebServiceTesterServlet.java:184)
at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.invoke(WebServiceTesterServlet.java:119)
at com.sun.enterprise.webservice.EjbWebServiceServlet.service(EjbWebServiceServlet.java:142)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at com.sun.enterprise.web.AdHocContextValve.invoke(AdHocContextValve.java:114)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1096)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:288)
at com.sun.enterprise.web.connector.grizzly.comet.CometEngine.executeServlet(CometEngine.java:609)
at com.sun.enterprise.web.connector.grizzly.comet.CometEngine.handle(CometEngine.java:356)
at com.sun.enterprise.web.connector.grizzly.async.DefaultAsyncExecutor.invokeFilters(DefaultAsyncExecutor.java:175)
at com.sun.enterprise.web.connector.grizzly.async.DefaultAsyncExecutor.interrupt(DefaultAsyncExecutor.java:153)

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