Phenomenon: When the page is refreshed, echarts is displayed normally, but when the component is switched, the echarts chart is invisible
Reason: when leaving the current page, the echarts instance is not destroyed, and when entering the page again, it will not be triggered Update
solution: Destroy the echarts instance in the onBeforeUnmount life cycle
onBeforeUnmount(() => {
myChart.dispose();
ticketsChart.dispose();
});