I cant insert Chart in Angular

I want to insert this chart from amcharts https://www.amcharts.com/demos-v4/map-dynamic-pie-charts-v4/, but I have got this error “Property ‘pieData’ does not exist on type ‘Object'”, I tried everything that worked for other charts, but this did not fix.
here is my code

export class MapComponent implements OnInit {

  constructor() { }

  ngOnInit(): void {
    
  }

  createChart1() {
    am4core.useTheme(am4themes_animated);
  // Themes end
  
  // Create map instance
  let chart = am4core.create("chartdiv", am4maps.MapChart);
  
  // Set map definition
  chart.geodata = am4geodata_continentsLow;
  
  // Set projection
  chart.projection = new am4maps.projections.Miller();
  
  // Create map polygon series
  let polygonSeries = chart.series.push(new am4maps.MapPolygonSeries());
  polygonSeries.exclude = ["antarctica"];
  polygonSeries.useGeodata = true;
  
  // Create an image series that will hold pie charts
  let pieSeries = chart.series.push(new am4maps.MapImageSeries());
  let pieTemplate = pieSeries.mapImages.template;
  pieTemplate.propertyFields.latitude = "latitude";
  pieTemplate.propertyFields.longitude = "longitude";
  let pieChartTemplate = pieTemplate.createChild(am4charts.PieChart);
  pieChartTemplate.adapter.add("data", function(data, target) {
    if (target.dataItem) {
    return target.dataItem.dataContext.pieData;
  }
  else {
    return [];
  }
  });
  pieChartTemplate.propertyFields.width = "width";
  pieChartTemplate.propertyFields.height = "height";
  pieChartTemplate.horizontalCenter = "middle";
  pieChartTemplate.verticalCenter = "middle";
  
  let pieTitle = pieChartTemplate.titles.create();
  pieTitle.text = "{title}";
  
  let pieSeriesTemplate = pieChartTemplate.series.push(new am4charts.PieSeries);
  pieSeriesTemplate.dataFields.category = "category";
  pieSeriesTemplate.dataFields.value = "value";
  pieSeriesTemplate.labels.template.disabled = true;
  pieSeriesTemplate.ticks.template.disabled = true;
  
  pieSeries.data = [{
  "title": "North America",
  "latitude": 39.563353,
  "longitude": -99.316406,
  "width": 100,
  "height": 100,
  "pieData": [{
    "category": "Category #1",
    "value": 1200
  }, {
    "category": "Category #2",
    "value": 500
  }, {
    "category": "Category #3",
    "value": 765
  }, {
    "category": "Category #4",
    "value": 260
  }]
  }, {
  "title": "Europe",
  "latitude": 50.896104,
  "longitude": 19.160156,
  "width": 50,
  "height": 50,
  "pieData": [{
    "category": "Category #1",
    "value": 200
  }, {
    "category": "Category #2",
    "value": 600
  }, {
    "category": "Category #3",
    "value": 350
  }]
  }, {
  "title": "Asia",
  "latitude": 47.212106,
  "longitude": 103.183594,
  "width": 80,
  "height": 80,
  "pieData": [{
    "category": "Category #1",
    "value": 352
  }, {
    "category": "Category #2",
    "value": 266
  }, {
    "category": "Category #3",
    "value": 512
  }, {
    "category": "Category #4",
    "value": 199
  }]
  }, {
  "title": "Africa",
  "latitude": 11.081385,
  "longitude": 21.621094,
  "width": 50,
  "height": 50,
  "pieData": [{
    "category": "Category #1",
    "value": 200
  }, {
    "category": "Category #2",
    "value": 300
  }, {
    "category": "Category #3",
    "value": 599
  }, {
    "category": "Category #4",
    "value": 512
  }]
  }];
}

}

I tried a lot, but I could not fix it, did u have same issue or can you help ?