AWS MSK connector with https://github.com/confluentinc/kafka-connect-elasticsearch ERROR Failed to create client to verify connection. (io.confluent.connect.elasticsearch

I try to use aws msk connector to connect my kafka with elastic.io elasticsearch I use https://github.com/confluentinc/kafka-connect-elasticsearch plugin. I'm getting all the time error ERROR Failed to create client to verify connection. The same think I do in confluentic and it works.Mayeb there is some issue in my kafka ? Kafka is in private vpc with 3 subnets route tables and internet gateway. Security groups are all trafic open for inbound and outbound ports How can I fix this ?