GlassFishContainer class fetches CommandRunner results in the form of comma separated elements.

There is a bug when reading network-listeners, the list is splitted but not trimmed what generates a NulPointerException when fetching the string:

"configs.config.server-config.network-config.network-listeners.network-listener. https-listener.enabled"

Notice the space in the dotted path "network-listener. https-listener".

The patch could just trim the string:

429: Integer listenPort = readNetworkListenerPort(config, networkListener.trim());