Index lifecycle error

Elastic Stack Elasticsearch
4

I have the same error. @dakrone the indices are being created by Metricbeat. The template does not contain an alias:

{
"metricbeat-6.6.0": {
    "order": 0,
    "index_patterns": [
        "metricbeat-6.6.0*"
    ],
    "settings": {
        "index": {
            "lifecycle": {
                "name": "Metricbeat"
            }
        }
    },
    "mappings": {},
    "aliases": {}
}

}