leader-line-vue is not compatible in ie11

leader-line-vue is not compatible in ie11

1. Install the babel-polyfill package in the project through npm
2. Find the configuration file of the project. My project was created through vue-cli3 and added the following configuration in vue.config.js

module.exports = {
    
    
	chainWebpack: config => {
    
    
		config.entry('main').add('babel-polyfill');
	},
	transpileDependencies: [
		'leader-line-vue'
	]
}