JBossWS - Getting WARN [ServiceDelegateImpl] Cannot access wsdlURL for https client

Issue

I coded up a simple web service client and deployed it into JBoss EAP and get the following error: -

org.jboss.ws.WSException: Target endpoint address not set
at org.jboss.ws.core.CommonClient.invoke(CommonClient.java:331)
at org.jboss.ws.core.jaxws.client.ClientImpl.invoke(ClientImpl.java:231)

Also the following WARN is logged: -

WARN  [ServiceDelegateImpl] Cannot access wsdlURL: https://some_server/endpoint?wsdlhttps://WS-Test/TestService/v2/TestService?wsdl

https://WS-Test/TestService/v2/TestService?wsdl

I access the URL directly and it indicates that the server does not trust the ssl connection to the server.

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target