I was following this tutorial in order to learn how to make popovers in my VueJS app.
When I compiled the projects I got an error that says:

[Vue warn]: Error in data(): "TypeError: _popperjs_core__WEBPACK_IMPORTED_MODULE_0__.default is undefined"

I traced the problem to the BasePopover.vue component - first <script> line that says import Popper from "popper.js";
In my application I changed that to import Popper from "@popperjs/core"; but the error still keeps appearing.

So I followed the official Popper.js tutorial to simplify things.
I installed via npm i @popperjs/core (also tried using VueCLI as seen in the image below and via npm install @popperjs/core --save).

This is my current code:

<template>

  <div id="app">

    <button id="button" aria-describedby="tooltip">My button</button>

    <div id="tooltip" role="tooltip">My tooltip</div>

  </div>

</template>



<script>

//import Popper from "@popperjs/core/lib/popper";

import Popper from "@popperjs/core";

export default {

  name: "TestView",

  components: {

  },



  data() {

    

      const button = document.querySelector('#button');

      const tooltip = document.querySelector('#tooltip');



      Popper.createPopper(button, tooltip);

    

    return {

    };

  },

};

</script>



<style>

#app {

  font-family: "Avenir", Helvetica, Arial, sans-serif;

  -webkit-font-smoothing: antialiased;

  -moz-osx-font-smoothing: grayscale;

  text-align: center;

  color: #2c3e50;

  padding: 350px 0;

  background-color: #C4DFD1;

}

</style>

I don't know what else to do. Any help is appreciated!