echarts.js:2278 There is a chart instance already initialized on the dom.

This error message indicates that you are trying to initialize an ECharts chart on a DOM element that already has a chart instance attached to it.

To resolve this issue, you can either destroy the existing chart instance before initializing a new one or ensure that you are initializing the chart on a different DOM element that doesn't have a chart instance already.

Here's an example of how you can destroy the existing chart instance before initializing a new one:

var chartElement = document.getElementById('chartContainer');

// Check if there is an existing chart instance
if (chartElement && chartElement.chart) {
  // Destroy the existing chart instance
  chartElement.chart.dispose();
}

// Initialize the new chart instance
var myChart = echarts.init(chartElement);

Make sure to replace `'chartContainer'` with the ID or selector of your actual DOM element.

By destroying the existing chart instance, you can safely initialize a new one without encountering the error.