I'm trying to use firebase in my Vue app but it's giving the above-mentioned error. The firebase init file is as follows.

**import { initializeApp } from "firebase/app";
import firestore from "firebase/firestore";

const firebaseConfig = {
  apiKey: "xxx",
  authDomain: "xxx",
  projectId: "xxx",
  storageBucket: "xxx",
  messagingSenderId: "xxx",
  appId: "xxx",
};

// Initialize Firebase
const firebaseApp = initializeApp(firebaseConfig);
firebaseApp.firestore().settings({ timestampsInSnapshots: true });
// firebase.analytics();

// export firestore database
export default firebaseApp.firestore();**

I have installed firebase 8.0.0 in the app.