Hieu

I got the same issue. Environments: - kafka_2.13-3.3.1 - kafka-connect-elasticsearch-14.0.3.jar Command: ``` echo '{"name":"elastic-login-connector", "config":{"connector.class":"ElasticsearchSinkConnector","connection.url":"http://localhost:9200","type.name":"mysql-data","topics":"mysql.login","key.ignore":true}}' | curl -X POST -d @- http://localhost:8083/connectors --header "Content-Type:application/json" ``` Logs ``` [2023-01-29 18:52:53,071] WARN...

Okay, I've got it worked by loading **both the connector and its dependencies**. In your Kafka's `config/connect-distributed.properties`, set `plugin.path` to the entire connector's lib directory ``` plugin.path=confluentinc-kafka-connect-elasticsearch-14.0.3/lib ```

Same here. Thank you, seahen, for the new release in 2021. Really appreciate it!

I have the same issue after upgrading to Spring Boot 3.2.5. Setting `clear-checksums` to `false` resolves it.