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When I start the flutter web app I get this error:
[core/not-initialized] Firebase has not been correctly initialized. Usually this means you've attempted to use a Firebase service before calling
Firebase.initializeApp.
<!DOCTYPE html>
<html>
<head>
...
</head>
<body>
<script type="module">
// Import the functions you need from the SDKs you need
import { initializeApp } from "https://www.gstatic.com/firebasejs/9.9.0/firebase-app.js";
import { auth } from 'https://www.gstatic.com/firebasejs/9.9.0/firebase-auth.js'
import { firestore } from 'https://www.gstatic.com/firebasejs/9.9.0/firebase-firestore.js'
// https://firebase.google.com/docs/web/setup#available-libraries
// Your web app's Firebase configuration
const firebaseConfig = {
apiKey: "xxx",
authDomain: "xxx",
projectId: "xxx",
storageBucket: "xxx",
messagingSenderId: "xxx",
appId: "xxx"
};
// Initialize Firebase
const app = initializeApp(firebaseConfig);
</script>
<!-- This script installs service_worker.js to provide PWA functionality to
application. For more information, see:
https://developers.google.com/web/fundamentals/primers/service-workers -->
<script>
...
</script>
</body>
</html>
As you can see firebase is initialized in the index.html file. I have installed all the needed libraries, this is the list:
Should I init firebase in flutter?
535
asked Oct 27 '25 08:10
if (kIsWeb)
await Firebase.initializeApp(
options: FirebaseOptions(
apiKey: "xxx",
appId: "xxx",
messagingSenderId: "xxx",
projectId: "xxx",
),
);
else
await Firebase.initializeApp();
Add the above code in your main.dart file. (kIsWeb will check whether the application is running on the web)
171
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