ERROR : "Authentication to realm file1 failed - Password authentication failed for elastic" after updgrading my kubernetes cluster

hello everyone,

a few days ago my kubernetes cluster certificates expired (on prem) so i upgraded my kubernetes version to get them renewed, before the upgrade i was using ECK for about a year, had multiple elastic clusters , i was creating , removing , editing clusters ..ex everything ok, but now after the upgrade is done i'm faceing this error on my elastic nodes that prevent them from running normally:

"WARN", "message":"Authentication to realm file1 failed - Password authentication failed for elastic", "ecs.version": "1.2.0","service.name":"ES_ECS","event.dataset":"elasticsearch.server"

when i curl the nodes they respond normally, but all i get when i try to login from kibana is "kibana is not ready yet"

is there a config from eck that needs to be done with this new cluster?

Thank you

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