The plugin can be updated, the plugin is broken because of a great new feature that allows the creation of new emoji groups but we still can register new emojis via plugin
https://github.com/discourse/discourse/commit/0996c3b7b36c37c3b478985da6e968f54dc4835c
I think we’ll just need to add an element in the plugin.rb file, something like this:
register_emoji "doh", "/plugins/discourse-plugin-vb-emoticons/images/doh.gif", "vbulletin"
And it should work again