I display a marker on the map, an error occurs?

Guys, it's the second day of mess around.
I have to get a label on me.map and make clustering.

Use this example https://tech.yandex.ru/maps/jsbox/2.1/clusterer_create
From the example it works. Slip him your tags, this error occurs
5c97c025537a4480555251.png

Data themselves are stored like this:
5c97c0be85868659312214.png

The labels get here
$.ajax({
 url: "ajax.php",
 async: false,
 data: ({'op': 'getcoord'}),
 dataType: "json",
 success: function(data){
 // console.log(data+' vv');
 let i = 0;
 data.forEach(function(item) {
console.log(item);
 let coord = item.PROPERTY_COORD_VALUE;
 if(coord === "){
 return true;
}
 coord = coord.split(",");//tried without this
i++;

 geoObjects[i] = new ymaps.Placemark(coord, getPointData(i), getPointOptions());
});
}
 });
March 19th 20 at 08:22
1 answer
March 19th 20 at 08:24
Solution
if the coordinates are already known, you can use this example. you only need to provide data to the kind of array of dots
click
ymaps.ready(
 () => {
 let Map = new ymaps.Map('map', {
 center: [55.753994, 37.622093],
 zoom: 10
}),
 objectManager = new ymaps.ObjectManager({
 clusterize: true,
 gridSize: 32,
}),
 dots = [
{
 "type": "Feature",
 "id": 1,
 "geometry": {
 "type": "Point",
 "coordinates": [54.753215, 36.622504]
},
 "icon": "darkGreenDotIcon",
 "address": "Moscow",
 "properties": {
 'iconCaption': "caption",
 'balloonContentBody': "Balloon",
}
},
{
 "type": "Feature",
 "id": 2,
 "geometry": {
 "type": "Point",
 "coordinates": [53.753215, 34.622504]
},
 "icon": "darkGreenDotIcon",
 "address": "Bryansk",
 "properties": {
 'iconCaption': "caption",
 'balloonContentBody': "Balloon",
}
},
{
 "type": "Feature",
 "id": 3,
 "geometry": {
 "type": "Point",
 "coordinates": [55.753215, 37.622504]
},
 "icon": "darkGreenDotIcon",
 "address": "Saint Petersburg",
 "properties": {
 'iconCaption': "caption",
 'balloonContentBody': "Balloon",
}
}
];

Map.geoObjects.add(objectManager);

objectManager.add({
 "type": "FeatureCollection",
 "features": dots
});
 Map.setBounds(objectManager.getBounds(), { checkZoomRange: true });
}
);

Find more questions by tags Yandex.MapsJavaScript