x509: certificate has expired or is not yet valid

Hi,

all of a sudden, the services stopped working after running stable for 6 months. The console gives me this:

kubectl get pods
Unable to connect to the server: x509: certificate has expired or is not yet valid

or

helm upgrade video team-video/ --values /etc/team-container/values-video.yaml
Error: UPGRADE FAILED: query: failed to query with labels: Get https://127.0.0.1:6443/api/v1/namespaces/default/secrets?labelSelector=name%3Dvideo%2Cowner%3Dhelm%2Cstatus%3Ddeployed: x509: certificate has expired or is not yet valid

I checked all certificates in /var/lib/rancher/k3s/server/tls/ with openssl. None are expired yet.