Cannot read preporties of undefined (reading 'register') at chartjs-plugin-annotationLine.js срочно нужна помощь

Всем здравствуйте!Мне нужна помощь!

    const annotationLinePlugin = {
  renderAnnotationLine: function(chartInstance, line) {
      let datasetMeta = chartInstance.getDatasetMeta(line.datasetIndex);
      let context = chartInstance.chart.ctx;
      let datasetModel = datasetMeta.data[line.dataIndex]._model;

      const xBarCenter = datasetModel.x
      const barWidth = datasetModel.width;
      const xStart = xBarCenter - (barWidth / 2) - 4;
      const xEnd = xBarCenter + (barWidth / 2) + 4;

      const yAxisID = datasetMeta.yAxisID;
      const yCoordinate = chartInstance.scales[yAxisID].getPixelForValue(line.yCoordinate);

      context.beginPath();
      context.strokeStyle = line.color;
      context.lineWidth = line.width;
      context.moveTo(xStart, yCoordinate);
      context.lineTo(xEnd, yCoordinate);
      context.stroke();


      if (typeof line.label !== typeof undefined) {
          context.textAlign = 'center';
          context.fillStyle = line.color;
          context.fillText(line.label, yCoordinate, xEnd + 7);
      }
  },

  afterDatasetsDraw: function(chart, easing) {
      if (chart.data.datasets.length < 1) {
          return;
      }
      if (chart.config.lines) {
          chart.config.lines.map(line => {
              this.renderAnnotationLine(chart, line);
          });
      }
  }
};


 Chart.plugins.register(annotationLinePlugin);

В браузере выдаёт ошибку :

Uncaught TypeError : 
Cannot read preporties of undefined (reading 'register') 
at chartjs-plugin-annotationLine.js:42:15