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java.lang.NullPointerException at java.util.concurrent.ConcurrentHashMap.put(Unknown Source) at com.sun.grizzly.tcp.Request.setAttribute( at org.apache.jk.common.HandlerRequest.decodeAttributes( at org.apache.jk.common.HandlerRequest.decodeRequest( at org.apache.jk.common.HandlerRequest.invoke( at org.apache.jk.common.ChannelSocket.invoke( at org.apache.jk.common.ChannelSocket.processConnection( at org.apache.jk.common.ChannelSocket$SocketConnection.runIt( at org.apache.tomcat.util.threads.ThreadPool$ at Source)