Nifi Http POST giving SSLHandshake error not invoking https

[#1]

Hi I am trying to make an http post with json body. Not HTTPS. but its giving me a SSL handshake error

Error:

InvokeHTTP[id=ef8e487c-0185-1000-c26f-befb69bd886e] Request Processing failed: FlowFile[filename=49ae7df0-2ea5-4de3-845d-5a5092b0f544]: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

HTTP URL: http://****

Thanks.