Watch Face Animation - Drawable Symbol Undetected

I followed the Dance GIF tutorial and have code identical to this GitHub repo. One problem I am running into is in the DanceDanceAnimationController.mc class. 

    function handleOnShow(view) {
        if( view.getLayers() == null ) {
           _animation = new WatchUi.AnimationLayer(
                Rez.Drawables.dancers,
                {
                    :locX=>0,
                    :locY=>0,
                }
            );

            _textLayer = buildTextLayer();
            view.addLayer(_animation);
            view.addLayer(_textLayer);
        }
    }

I am getting an error saying, "Undefined symbol "dancers" detected" on line 3 . I am struggling to identify possible issues