Sleep and sleepUntil

[TheGreatYam 1]

I have a quick question around Sleep.sleepUntil. I think I have my head wrapped around it mostly now, but am still kind of baffled as to why it sometimes doesn't work. If I don't have a particular call of sleepUntil earlier in the code it sometimes says that the type org.6 (sometimes org.5) cannot be resolved. I have some code snippets attached from a class where all I need to do is have this particular sleepUntil statement - even if it isn't in any way connected to the other - for it not to error out. What am I doing wrong or missing?

[Luxe 83]

never seen it before, seems like an intellisense problem more than dreambot.