HTTPS access does not work

Document ID : KB000115443
Last Modified Date : 23/10/2018
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I configured the Vantage WebUI for HTTPS, but connection can be established using HTTP only.
Related messages:

SEVERE: Failed to initialize connector [Connector[HTTP/1.1-7776]]
org.apache.catalina.LifecycleException: Failed to initialize component [Connector[HTTP/1.1-7776]]
        .  .  .  .
        at org.apache.catalina.startup.Bootstrap.main(
Caused by: org.apache.catalina.LifecycleException: Protocol handler initialization failed
        at org.apache.catalina.connector.Connector.initInternal(
        at org.apache.catalina.util.LifecycleBase.init(
        ... 12 more
Caused by: EDC8115I Address already in use.  
The same port was used in server.xml for the HTTP and HTTPS connector.
Be sure different ports are specified.