Opensearch index-management loaded in plugin is not loaded

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):
2.14.0

Describe the issue:
Hi Team,

I have set up an OpenSearch cluster in Kubernetes using the OpenSearch Operator. I added an ISM (Index State Management) policy to delete indices after 20 days, but the indices were not deleted as expected.

Could someone please advise on the correct way to make this configuration persistent?

I checked the installed plugins using the /opensearch-plugin list command inside the container and plugin is installed.

Thank you.

Configuration:

Relevant Logs or Screenshots:

When I run this command _plugins/_ism/stats got following error.

{
“error”: “no handler found for uri [/_plugins/_ism/stats] and method [GET]”
}