Board Thread:Support Requests - Designing Your Wiki/@comment-4260948-20200622042605/@comment-44807868-20200623044137

That's because you aren't adding the source code for the infobox. You may want to have a look at Help:Infoboxes and Help:Templates to read how they're supposed to work.

I've added the required contents based on my assumptions. Feel free to change anything as needed or let me know if you can't figure it out. :)