Из-за чего может выскакивать Uncaught TypeError: t.getParent is not a function

     ymaps.ready(init);
function init () {
    var myMap = new ymaps.Map('map', {
            center: [".$this->center_map."],
            zoom: ".$this->zoom."
        },
        {
            searchControlProvider: 'yandex#search'
        }),
        soccerclubCollection = new ymaps.GeoObjectCollection(null, {
            iconLayout: 'default#image',
            iconImageHref: '/images/design/ball_icon.png',
            iconImageSize: [30, 30],
        });
        
        soccerclubCoords = [[55.73, 37.75], [55.81, 37.75]];
        
        for (var i = 0, l = soccerclubCoords.length; i < l; i++) {
        soccerclubCollection.add(new ymaps.Placemark(soccerclubCoords[i]));
        }
        
        myMap.geoObjects.add(soccerclubCoords);
       }