Board Thread:Support Requests - Getting Technical/@comment-44651496-20200106140655/@comment-1038387-20200106144528

As the source of Template:ArticleVersion (the template you're trying to emulate) says, it's a very complex template. It should not be modified unless you understand what it does, and it shouldn't be maintained on a wiki unless you know how it works. It requires at least the Variables extension, which is not standard on Fandom's forked version of MediaWiki but can be enabled upon request. As it's an independent wiki, it may rely on other functions and features from the more modern MediaWiki version (1.32.6) or on external databases.

If you're just starting a wiki, you don't need that yet. This isn't jumping in the deep end, this is jumping off a cliff blindfolded.