clist what? Also some user reported another somewhere else and it showed up in blue as well
I will assume clist
means “C list”. Some list in the backend. This is nothing for you to worry about and is just output for Roblox.
As far as I’m aware I believe, its usually just additional messages etc which are passed in for things you might want to be aware of. An example is an infinite wait for a certain item - it usually passes information which you may need e.g. an order of events that occurred before an error occurred. In other words, it might not be the error itself but it may be useful as to working out why.
If you don’t know what clist is in this context (much like I don’t), then its likely because its some background thing Roblox has.
It is however, usually related to the TestService which I wouldn’t worry much about. I will add, TestService can be good for people working on higher level coding as it can provide additional context to whats actually causing an issue, and it also allows you to create custom issue messages for the programmer / engineer to handle.
My focus now rises to what type of messages these are even considered, and my curiosity as to why something I’d see would not be documented. As you imply an infinite waitForChild is there but that is orange, a warning, not the strange blue I hope someone knows more about.