Getting error in Elasticsearch log saying "Authentication finally failed for null from "


I have configured Elasticsearch with OD security plugin with basic_auth and openId authentication.My cluster is up and running and also everything works, but i see following warning level logs continuously appearing in elastic search nodes.

{“type”: “server”, “timestamp”: “2020-06-22T23:32:46,993Z”, “level”: “WARN”, “component”: “c.a.o.s.a.BackendRegistry”, “”: “", “”: "-master-0”, “message”: “Authentication finally failed for null from”, “cluster.uuid”: “gfApSl-CTiWyyO82SwIdxg”, “”: “7Lna25UcSly8vg4T8viIrg” }

Any idea how to resolve this it.