I don’t know if the theme fits, but since Roblox was down (and still is) i couldn’t use the tool box, like can’t turn it on, and when i play test my game (in studio) it gives me this error message (not from output)
I’d consider checking for any potential malicious plugins or models you might’ve installed, there was supposedly an outage yesterday that did happen but it got fixed later tonight so the issue could be more or less on your end I’d assume