Failed to install template

Hello,

I'm new with elastic, I'm working with logs that I want to process from them a new fields based on aggregation.
But I got this error:

[ERROR][logstash.outputs.elasticsearch][main] Failed to install template {:message=>"Got response code '400' contacting Elasticsearch at URL 'http://elasticsearch:9200/_template/vlogstash'", :exception=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::BadResponseCodeError

This is an example of my logs:

{"log_level":"INFO","timestamp":"2021-12-22T14:54:52.159546Z","event_type":"step1","c_id":"12","c_pid":"123","mit":"123","no_id":"1234","id":"1e32834e-6337-11ec-b9ad-0242ac110004","module":"abc"}
{"log_level":"INFO","timestamp":"2021-12-22T14:54:55.159546Z","event_type":"step2","c_id":"12","c_pid":"123","mit":"123","no_id":"1534","id":"1e32834e-6337-11ec-b9ad-0242ac110004","module":"abc"}
{"log_level":"INFO","timestamp":"2021-12-22T14:54:56.159546Z","event_type":"step3","c_id":"12","c_pid":"123","mit":"123","no_id":"1234","id":"1e32834e-6337-11ec-b9ad-0242ac110004","module":"abc"}

And this is the template i'm using:

{
    "template": "vlogstash",
    "index_patterns": [
        "vlogstash-*"
    ],
    "settings": {
        "number_of_shards": 1
    },
    "mappings": {
        "properties": {
            "log_level": {
                "type": "keyword"
            },
            "timestamp": {
                "type": "date"
            },
            "event_type": {
                "type": "keyword"
            },
            "capture_res_id": {
                "type": "Keyword"
            },
            "capture_pid": {
                "type": "Keyword"
            },
            "mti": {
                "type": "Keyword"
            },
            "node_id": {
                "type": "Keyword"
            },
            "msg_uuid": {
                "type": "Keyword"
            },
            "module": {
                "type": "keyword"
            },
            "step1Time": {
                "type": "double"
            },
            "step2Time": {
                "type": "double"
            },
            "step3Time": {
                "type": "double"
            },
            "step4Time": {
                "type": "double"
            },
            "delta13": {
                "type": "double"
            },
            "over_all": {
                "type": "double"
            },
            "internal": {
                "type": "double"
            }
        }
    }
}

up up