NullPointerException in RemoteReader

[masoud-io]

This exception happens in SI2 in Grid5000

UnicastClientChannelHandler[id: 0xf182de2f, /172.16.1.78:41961 => /172.16.1.52:4250] EXCEPTION: java.lang.NullPointerException
java.lang.NullPointerException
at fr.inria.jessy.NettyRemoteReader.learnReadReplyMessage(NettyRemoteReader.java:159)
at fr.inria.jessy.NettyRemoteReader.receiveMessage(NettyRemoteReader.java:118)
at fr.inria.jessy.communication.UnicastClientChannelHandler.messageReceived(UnicastClientChannelHandler.java:18)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:296)
at org.jboss.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:458)
at org.jboss.netty.handler.codec.frame.FrameDecoder.callDecode(FrameDecoder.java:439)
at org.jboss.netty.handler.codec.frame.FrameDecoder.messageReceived(FrameDecoder.java:303)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:84)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.processSelectedKeys(AbstractNioWorker.java:465)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:332)
at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:35)
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:662)