This appears to be a reference to a popular "creepypasta" or internet urban legend within the Roblox community. While "roblox-1933.txt" isn't a real historical file from the 1930s (as Roblox was created in 2004), it serves as a eerie piece of digital folklore.
To stay grounded in reality, it's important to separate the spooky stories from the technical facts:
Youtube channels that investigate "deleted" or "hidden" files in popular games.