Yesterday, I was making a game, and everything worked great, the game was 100% unbreakable. Now, today, for some reason, when I run my game, I get things in the output coming from my scripts, such as:
Expanding on what @ForegoingTyler12943 said. Anytime you are using LocalScripts make sure you are using :WaitForChild. Since unlike the server, the client can often load scripts in before the workspace is loaded.
This issue will often only be present in LocalScripts.