`SSLCertVerificationError` when create spark-on-k8s-operator

Currently our company k8s system is run in a private server, which use self signed ssl certificate so prefect flow cannot reach the k8s server. Any solutions? Many thanks.
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='our-host.local', port=443): Max retries exceeded with url: /k8s/clusters/c-rgp56/apis/sparkoperator.k8s.io/v1beta2/namespaces/default/sparkapplications (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get issuer certificate (_ssl.c:992)')))