Elasticsearch logs SSL Problem null cert chain javax.net.ssl.SSLHandshakeException null cert chain

Issue

• Kibana is erroring out with a "Gateway Timeout" error when we go to the standard Kibana URL
• Getting an SSL stacktrace in the Elasticsearch logs

[2018-02-08 00:00:24,544][ERROR][com.floragunn.searchguard.ssl.transport.SearchGuardSSLNettyTransport] [logging-es-data-master-uv8mlpse] SSL Problem null cert chain
javax.net.ssl.SSLHandshakeException: null cert chain
        at sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1529)
        at sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSLEngineImpl.java:535)
        at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:813)
        at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:781)
        at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)
        at org.jboss.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1219)
        at org.jboss.netty.handler.ssl.SslHandler.decode(SslHandler.java:852)
        at 

• EFK stack is not working