Can not access jetty server in RTC extension with ssl error

I follow this article to do the workshop of RTC Extension. At the launch the Jetty server for debug step, I launch the [RTCExt] Jetty RTC Server configuration, but when user browser to https://locahost:7443/jazz/admin, I got the error in console and web page is also not available.

I post the error log here:
2015-08-05 17:36:46.973:WARN::EXCEPTION
javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
    at com.ibm.jsse2.o.a(o.java:30)
    at com.ibm.jsse2.o.a(o.java:23)
    at com.ibm.jsse2.SSLSocketImpl.b(SSLSocketImpl.java:356)
    at com.ibm.jsse2.SSLSocketImpl.a(SSLSocketImpl.java:58)
    at com.ibm.jsse2.SSLSocketImpl.h(SSLSocketImpl.java:63)
    at com.ibm.jsse2.SSLSocketImpl.a(SSLSocketImpl.java:316)
    at com.ibm.jsse2.SSLSocketImpl.startHandshake(SSLSocketImpl.java:220)
    at org.mortbay.jetty.security.SslSocketConnector$SslConnection.run(SslSocketConnector.java:675)
    at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)