22:57:39.705 EVENT  server: Received ping
22:57:45.638 WARN!! Exception for /server.cgi/node
java.lang.NullPointerException
        at izayoi.servlet.ServerServlet.node(ServerServlet.java:99)
        at izayoi.servlet.ServerServlet.execute(ServerServlet.java:46)
        at izayoi.servlet.BasementServlet.tweak(BasementServlet.java:79)
        at izayoi.servlet.BasementServlet.doGet(BasementServlet.java:59)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:358)
        at org.mortbay.jetty.servlet.WebApplicationHandler.dispatch(WebApplicationHandler.java:294)
        at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:567)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1807)
        at org.mortbay.jetty.servlet.WebApplicationContext.handle(WebApplicationContext.java:525)
        at org.mortbay.http.HttpContext.handle(HttpContext.java:1757)
        at org.mortbay.http.HttpServer.service(HttpServer.java:879)
        at org.mortbay.http.HttpConnection.service(HttpConnection.java:789)
        at org.mortbay.http.HttpConnection.handleNext(HttpConnection.java:960)
        at org.mortbay.http.HttpConnection.handle(HttpConnection.java:806)
        at org.mortbay.http.SocketListener.handleConnection(SocketListener.java:218)
        at org.mortbay.util.ThreadedServer.handle(ThreadedServer.java:331)
        at org.mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:520)