Today, use ecarts + Vue as the icon and prompt Vue. Runtime. ESM. JS?2b0e: 619 [Vue warn]: error in mounted hook: "typeerror: cannot read property 'getattribute' of undefined"
‘
I found some friends on the Internet and said, “yes, what should be loaded into the mounted this. $nexttick “, but it’s not. I wrote the value of refs wrong

Now let’s start looking for mistakes

html

<template>
    <div class="echart-box"  style="width: 280px;
       height:220px" ref="line_only_dom"></div>
</template>

js

  mounted() {
      this.drawLine();
  },
  methods: {
      drawLine() {
          let self = this;
          let line_dom = this.$refs.line_dom;
          this.mychart = this.$echarts.init(line_dom);

	}
}

Solution:

let line_dom = this.$refs.line_dom; change to let line_only_dom = this.$refs.line_only_dom; , this error will be solved