i have the same problem: 2020-04-29 02:47:57,953 ERROR [io.undertow.request] (default I/O-3) Closing SSLConduit after exception on handshake: javax.net.ssl.SSLHandshakeException: null cert chain at sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1521) at sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSLEngineImpl.java:528) at sun.security.ssl.SSLEngineImpl.readNetRecord(SSLEngineImpl.java:802) at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:766) at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:624)...