"Elasticsearch connection failure" on newly installed Elastic Security server

I recently installed Elastic Security following the belowlinked YouTube video:

Under Management > Fleet it is showing "Fleet Server is not Healthy. A healthy Fleet server is required before you can enroll agents with Fleet.". And, under Agents, it is showing only 1 agent, the Fleet Server which has an unhealthy state under "Endpoint Security" saying:

The endpoint's connection to Elasticsearch is either down or misconfigured. Make sure it is configured correctly

Do you have any recommendations on what I can do to troubleshoot?

Hi @Timothy_Dilbert I recommend taking a look at this project that uses Elastic Security in a container: The Elastic Container Project for Security Research | Elastic

It even comes with the fleet server configured.

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