Error after launching elastic stack

I'm using docker compose, logstash has ip 172.23.0.4, kibana has 172.23.0.3, elasticsearch 172.23.0.2.

{
    "type": "response",
    "@timestamp": "2021-09-12T22:53:33+00:00",
    "tags": [],
    "pid": 1216,
    "method": "get",
    "statusCode": 400,
    "req": {
        "url": "/api/monitoring/v1/elasticsearch_settings/check/nodes",
        "method": "get",
        "headers": {
            "host": "localhost:5601",
            "connection": "keep-alive",
            "accept": "application/json, text/plain, */*",
            "kbn-version": "7.7.0",
            "user-agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36",
            "sec-gpc": "1",
            "sec-fetch-site": "same-origin",
            "sec-fetch-mode": "cors",
            "sec-fetch-dest": "empty",
            "referer": "http://localhost:5601/app/monitoring",
            "accept-encoding": "gzip, deflate, br",
            "accept-language": "en-US,en;q=0.9"
        },
        "remoteAddress": "172.23.0.1",
        "userAgent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.63 Safari/537.36",
        "referer": "http://localhost:5601/app/monitoring"
    },
    "res": {
        "statusCode": 400,
        "responseTime": 39,
        "contentLength": 220
    },
    "message": "GET /api/monitoring/v1/elasticsearch_settings/check/nodes 400 39ms - 220.0B"
}

My configuration: https://github.com/danilobatistaqueiroz/docker_compose_elastic_stack

What is it mean?

Welcome to our community! :smiley:

Can you clarify where this response is coming from?