TLS handshake error observed for several operators

cluster is healthy. Observed below errors in cluster-node-tuning-operator pod.  
~~~
2023/04/12 07:01:34 http: TLS handshake error from 10.129.0.29:37450: remote error: tls: bad certificate
2023/04/12 07:01:35 http: TLS handshake error from 10.129.0.29:37464: remote error: tls: bad certificate
2023/04/12 07:01:37 http: TLS handshake error from 10.129.0.29:37474: remote error: tls: bad certificate
2023/04/12 07:04:34 http: TLS handshake error from 10.129.0.29:43390: remote error: tls: bad certificate
~~~
From above logs I understand operator is not able to communicate to kube-apiserver-operator.
~~~
openshift-kube-apiserver-operator                 kube-apiserver-operator-56bb44cf7-97kt7                          1/1    Running    0         7d     10.129.0.29    master02-sc.ipa.derfe.ine.mx
~~~
Observed a lot of below certificate errors in openshift-kube-apiserver-operator pod:
~~~
2023-04-11T18:03:38.533385853-06:00 E0412 00:03:38.533310       1 degraded_webhook.go:128] x509: certificate signed by unknown authority
~~~
Need to investigate cause of these errors.

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