Mosquitto clustering is not working

[sachin-source]

Hello all,

I'm new to mosquitto and I'm making clustering of my mosquitto brokers with authentication plugin.
but I'm struct in doing this.
I reffered this link https://github.com/hui6075/mosquitto-cluster
but the node 1 and node 2 are giving the errors like this.
can you help please in debugging this problem.

Thanks in Advance..