upcoming handshake states: server finished[20]
*** Certificate chain
<Empty>
***
fatal error: 42: null cert chain
javax.net.ssl.SSLHandshakeException: null cert chain
%% Invalidated:  [Session-5, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384]
MyThread
, SEND TLSv1.2 ALERT:
fatal,
description = bad_certificate
MyThread, WRITE: TLSv1.2 Alert, length = 2
MyThread, fatal: engine already closed.  Rethrowing javax.net.ssl.SSLHandshakeException: null cert chain
Stack Trace
javax.net.ssl.SSLHandshakeException: null cert chain
    at sun.security.ssl.Handshaker.checkThrown(Handshaker.java:1521) ~[?:1.8.0_211]
    at sun.security.ssl.SSLEngineImpl.checkTaskThrown(SSLEngineImpl.java:528) ~[?:1.8.0_211]
    at sun.security.ssl.SSLEngineImpl.writeAppRecord(SSLEngineImpl.java:1197) ~[?:1.8.0_211]
    at sun.security.ssl.SSLEngineImpl.wrap(SSLEngineImpl.java:1165) ~[?:1.8.0_211]
    at javax.net.ssl.SSLEngine.wrap(SSLEngine.java:469) ~[?:1.8.0_211]
    ... 4 more
Caused by: javax.net.ssl.SSLHandshakeException: null cert chain
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) ~[?:1.8.0_211]
    at sun.security.ssl.SSLEngineImpl.fatal(SSLEngineImpl.java:1647) ~[?:1.8.0_211]
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:318) ~[?:1.8.0_211]
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:306) ~[?:1.8.0_211]
    at sun.security.ssl.ServerHandshaker.clientCertificate(ServerHandshaker.java:1939) ~[?:1.8.0_211]
    at sun.security.ssl.ServerHandshaker.processMessage(ServerHandshaker.java:232) ~[?:1.8.0_211]
    at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1037) ~[?:1.8.0_211]
    at sun.security.ssl.Handshaker$1.run(Handshaker.java:970) ~[?:1.8.0_211]
    at sun.security.ssl.Handshaker$1.run(Handshaker.java:967) ~[?:1.8.0_211]
    at java.security.AccessController.doPrivileged(Native Method) ~[?:1.8.0_211]
    at sun.security.ssl.Handshaker$DelegatedTask.run(Handshaker.java:1459) ~[?:1.8.0_211]
    ... 2 more

upcoming handshake states: server finished[20]
chain [0] = [
[
  Version: V3
  Subject: CN=ABC
  ...
  Issuer: CN=DEF
  ...
]
chain [1] = [
[
  Version: V3
  Subject: CN=DEF
  ...
  Issuer: CN=GHI
  ...
]
chain [2] = [
[
  Version: V3
  Subject: CN=GHI
  ...
  Issuer: CN=GHI
  ...
]