Unable to collect Windows logs through WinLogBeat & ElasticSearch 7.17

[tranceptor]

Hello, I've just installed GrayLog + Elasticsearch and I need to collect Windows logs from a Windows machine. I installed WinLogBeat following this instructions: [Grant access using API keys | Winlogbeat Reference [8.5] | Elastic](https://Create an API key for publishing).
But when I try to run curl to set the API key:

curl -X POST "localhost:9200/_security/api_key?pretty" -H 'Content-Type: application/json' -d'
{
  "name": "winlogbeat_host001", 
  "role_descriptors": {
    "winlogbeat_writer": { 
      "cluster": ["monitor", "read_ilm", "read_pipeline"],
      "index": [
        {
          "names": ["winlogbeat-*"],
          "privileges": ["view_index_metadata", "create_doc"]
        }
      ]
    }
  }
}
'

I get the following error:

  "error" : {
    "root_cause" : [
      {
        "type" : "index_not_found_exception",
        "reason" : "no such index [_security]",
        "resource.type" : "index_expression",
        "resource.id" : "_security",
        "index_uuid" : "_na_",
        "index" : "_security"
      }
    ],
    "type" : "index_not_found_exception",
    "reason" : "no such index [_security]",
    "resource.type" : "index_expression",
    "resource.id" : "_security",
    "index_uuid" : "_na_",
    "index" : "_security"
  },
  "status" : 404
}

I faithfully followed the installation instructions on graylog pages: Debian installation - Installing Graylog
My o.s.: Debian 11.5 - Elasticsearch-Oss v. 7.17 - GrayLog v. 4.3

I didn't delete or uninstall anything. It's a fresh installation.
Thank you all