SSPR breach check not working with 4.5.0.2

We have set up the breach check database through sspr for the haveibeenpwned.com check.  However we are seeing this error:

 

WARN , util.PwmPasswordRuleValidator, Problem while connecting to external breach database sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

 

The documentation doesn't have any information on which cert would be needed or possibly an api key?