Plugin Monitoring Service - Openfire 4.9.0

I updated my Openfire server from version 4.8.x to 4.9.0. The ‘Monitoring Service’ plugin was installed, but after the update, the plugin menu where I check saved conversations didn’t appear. I then removed the plugin and reinstalled it, but after installation, where the plugins are listed, it shows the message: ‘An exception occurred while loading plugin. Review the logs for additional details…’ I haven’t restarted the server yet. Is there a known solution? How can I resolve this?

You appear to be using version 2.5.0 of the plugin. This problem should disappear when you upgrade to the latest version of the plugin.