Disclaimer: I have no idea if Education is part of the Developer Hub or if they share the same content teams, so if this is not appropriate to be here I need to know where better to put it.
https://education.roblox.com/en-us/resources/battle-royale/timers-and-custom-events
Under the section Start and Stop the Timer, the following point is present:
Call myTimer.start(). Pass in gameSettings.matchDuration.
This will cause an error and is not consistent with the code sample. It has also led to issues where developers don’t understand that this references the index and not the literal way to call it. It is meant to be called as myTimer:start().