Openfire 4.1.0 Alpha - Unable to open admin interface

Hi Everybody,

I just installed openfire 4.1.0 and configured it successfully. But when I try to login admin console by web interface, it throws a NullPointerException.

I found the following under error.log file

2016.08.12 15:37:38 org.jivesoftware.openfire.container.AdminConsolePlugin - An exception occurred while trying to make available the admin console via HTTPS.

java.lang.NullPointerException

    at org.jivesoftware.openfire.container.AdminConsolePlugin.startup(AdminConsolePlug in.java:141)

    at org.jivesoftware.openfire.container.AdminConsolePlugin.initializePlugin(AdminCo nsolePlugin.java:241)

    at org.jivesoftware.openfire.container.PluginManager.loadPlugin(PluginManager.java :406)

    at org.jivesoftware.openfire.container.PluginMonitor$MonitorTask.run(PluginMonitor .java:284)

    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

    at java.util.concurrent.FutureTask.runAndReset(Unknown Source)

    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301 (Unknown Source)

    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknow n Source)

    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)

    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

    at java.lang.Thread.run(Unknown Source)