Analytics backend log shows:
The Tomcat connector configured to listen on port 8443 failed to start. The port may already be in use or the connector may be misconfigured.
Release : 12.3
The analytics backend uses the port specified in the applications.properties file with the server.port setting for its specific communications.
Have an admin check to see if something is already running one port 8443.
Use a different port for the server.port. The default is 8090.