elasticsearch_client_transport_client_bossT#2 WARN orgelasticsearchtransportnetty4Netty4Transport - exception caught on transport layer NettyTcpChannellocalAddress=

[elasticsearch[client][transport_client_boss][T#2]] WARN org.elasticsearch.transport.netty4.Netty4Transport - exception caught on transport layer [NettyTcpChannel{localAddress=/

This warning message is generated by the Elasticsearch transport client when an exception is caught on the transport layer. The `NettyTcpChannel{localAddress=/` indicates the local address where the exception occurred.

The warning message suggests that there might be an issue with the transport layer of the Elasticsearch client. It is important to investigate the root cause of this exception to ensure the stability and reliability of the Elasticsearch client