Request for Assistance: Fluentd Container Deployment Error

[srinidks]

Describe the bug

HI Team,
We have followed the deployment steps provided in the below official Fluentd documentation:

https://docs.fluentd.org/container-deployment/docker-compose

While the containers were successfully deployed, we are currently encountering an error with Fluentd not pushing logs to Elasticsearch. Please refer to the attached logs for more details.
Thanks

fluentd.logs.txt

in advance.
srini

Link to the problematic documentation

https://docs.fluentd.org/container-deployment/docker-compose

Expected explanation

encountering an error with Fluentd not pushing logs to Elasticsearch

Additional context

fluentd.logs.txt

[Watson1978]

Looks like we need to install elasticsearch gem v8.x when we use docker.elastic.co/elasticsearch/elasticsearch:8.x as server.

FROM fluent/fluentd:edge-debian
USER root
RUN ["gem", "install", "elasticsearch", "--no-document", "--version", "8.19.0"]
RUN ["gem", "install", "fluent-plugin-elasticsearch", "--no-document", "--version", "5.4.3"]
USER fluent

By default, elasticsearch gem v9 has been installed and causes error.