https://developer.roblox.com/en-us/api-reference/function/AnimationTrack/GetMarkerReachedSignal
The code example doesn’t use :GetMarkerReachedSignal() at all, and references a function that doesn’t appear on the AnimationTrack API reference page.
A post was merged into an existing topic: GetMarkerReachedSignal’s code sample uses GetKeyframeReachedSignal, which doesn’t exist