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

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This exception has no message.
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This exception has no message.
java.lang.NullPointerException:
at com.sun.grizzly.http.ProcessorTask.action(ProcessorTask.java:1163)
at com.sun.grizzly.tcp.Request.action(Request.java:419)
at org.apache.catalina.connector.Request.asyncComplete(Request.java:3760)
at test.TestServlet.doGet(TestServlet.java:55)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1523)
at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:822)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:517)
at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:488)
at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:379)
at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:336)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)

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