Very strange output in Roblox Studio

I don’t have access to the Studio Bugs page, so I’m forced to post it on Scripting & Support.

I was looking back through my error/warns history on my game, and I found this:

My account is over 13, so I have no idea how this has occured.
Just to clarify, this was from my warns/error history, it stores every warn or error that has appeared in your output in your game, and that showed up:

Please explain to me what happened.