Board Thread:Support Requests - Designing Your Wiki/@comment-14282052-20170923235240/@comment-27345308-20170924183957

That's a completely unrelated error to the template's functionality. The documentation template doesn't work because the related Lua module and the template itself are imported from Wikipedia, it looks like. Please don't import things from Wikipedia you don't know how they work.

Anyways, when the icon template is used on a valid namespace it seems to be working for me.