ChatFrame_OnHyperlink Show WHAT THE!

Guides UI and Macro
1 
--ChatFrame_OnHyperlinkShow(self, link, text, button) ok so we do this instead
SetItemRef(link, text, button, self) -- note the parameters order

hope this helps

2

https://warcraft.wiki.gg/wiki/API_SetItemRef

The self is surplus to requirements.