Unable to retrieve version information from Elasticsearch nodes. unable to get issuer certificate

When I upgrade to 8.8.2 from 7.17.9. I get below error in kibana.
Same certificates are working for 7.17.9 in kibana , but same are failing for 8.8.2, Any suggestion please.

Below is the error

Unable to retrieve version information from Elasticsearch nodes. unable to get issuer certificate

Thanks
Juhi

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