[jgroups-dev] What does cause NullPointerException?

I have a cluster consist of 5 machines, 3 allocated for services and 2 for
clients. I start the cluster and build a channel without any problem. Also
clients manage to send a request to the servers using channel.send(msg). 

However, when I use channel.send(msg) again (in client side), it gives me
NullPointerException. Moreover, NullPointerException point to line where
channel.send(msg) is.

Can anyone tell what does cause such problem?

Thank you

Ibrahim



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