Validation Exception with CloudCentral

provisionr [0.0.1-SNAPSHOT] $ cloudstack:offerings -s
CloudStack Service Offerings for provider cloudstack
Error executing command: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target connecting to GET https://cloudplatform.cloudcentral.com.au/client/api?response=json&command=listServiceOfferings&listAll=true HTTP/1.1