Get your own Vue server
App.vue
CompOne.vue
main.js
 
<template>
  <h1>The 'errorCaptured' Lifecycle Hook</h1>
  <p>Whenever there is an error in a child component, the errorCaptured() function is called on the parent.</p>
  <p>Open the browser console to see the captured error details.</p>
  <div>
    <comp-one></comp-one>
  </div>
</template>

<script>
export default {
  errorCaptured(error,compInst,errorSrcType) {
    console.log("error: ", error);
    console.log("compInst: ", compInst);
    console.log("errorSrcType: ", errorSrcType);
  }
}
</script>

<style>
#app > div {
  border: dashed black 1px;
  border-radius: 10px;
  padding: 10px;
  margin-top: 10px;
  background-color: lightgreen;
}
</style>                  
<template>
    <h2>Component</h2>
    <p>This is the component</p>
    <button @click="generateError">Generate Error</button>
</template>

<script>
export default {
  methods: {
    generateError() {
      this.$refs.objEl.innerHTML = "hi";
    }
  }
}
</script>                  
import { createApp } from 'vue'

import App from './App.vue'
import CompOne from './components/CompOne.vue'

const app = createApp(App)
app.component('comp-one', CompOne)
app.mount('#app')
                  
http://localhost:5173/