Please see this bug report, copying the relevant sections here.

Whenever I mouse over an item with armor in the tooltip, RatingBuster is printing the value of the Attack Power given into the chat. It gets kinda spammy is kinda annoying haha, I'm sure there's just a debug print somewhere so when you have the time, please remove it haha.

I found the issue here

With all that being said, I'm just extremely confused as to why there are two versions of RatingBuster. Yours is the only one on CurseForge which is convenient for me because I update my addons from there, but I was perplexed when I found the other author's github first and couldn't find the line of code that was in my own addon folder's RatingBuster.lua in the github RatingBuster.lua.

I guess I'd suggest you guys merge your projects and publish together on Curseforge, as I think that's where most users get their addons.