This error message typically appears when you try to launch Minecraft with mods that require the library but cannot find it or have an outdated version. To fix this, you need to manually download and install a compatible version (0.9.9 or newer) of the library into your game's mods folder. How to Install playerAnimator
function AnimatedCharacter() const canvasRef = useRef(null); install player-animator%2C version 0.9.9 or later.
npm list player-animator