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java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.put(Unknown Source) at com.sun.grizzly.tcp.Request.setAttribute(Request.java:446) at org.apache.jk.common.HandlerRequest.decodeAttributes(HandlerRequest.java:501) at org.apache.jk.common.HandlerRequest.decodeRequest(HandlerRequest.java:451) at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:303) at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:814) at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:743) at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:936) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:682) at java.lang.Thread.run(Unknown Source)