catalina.out shows the following prints
[https-jsse-nio-8443-exec-2] DEBUG org.apache.cxf.fediz.core.samlsso.SAMLProtocolResponseValidator - Issuer 'null' not validated in keystore '/spectrum/custom/keystore/cacerts'
[https-jsse-nio-8443-exec-2] WARN org.apache.cxf.fediz.core.samlsso.SAMLProtocolResponseValidator - SAML Response is not trusted
[https-jsse-nio-8443-exec-2] DEBUG org.apache.cxf.fediz.core.processor.SAMLProcessorImpl - The security token could not be authenticated or authorized