You server node bound to port 47501 rather than 47500 for some reason (most likely the latter was occupied by some other process). Try to add port range to the IP finder on client side. Replace this line:
ipFinder.setAddresses(Arrays.asList("127.0.0.1", "172.20.98.77"));
with this:
ipFinder.setAddresses(Arrays.asList("172.20.98.77:47500..47509"));
-Val
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