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This exception has no message.
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java.lang.NullPointerException: 	at oracle.AQ.xml.AQxmlServlet20.doPost(AQxmlServlet20.java:191)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:521)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:588)	at org.apache.jserv.JServConnection.processRequest(JServConnection.java:435)	at org.apache.jserv.JServConnection.run(JServConnection.java:290)	at java.lang.Thread.run(Thread.java:479)