ERROR flutter lib ui ui dart state cc 157 Unhandled Exception core no-app No Firebase App DEFAULT has been created - call Firebase initializeApp

Question

Hi Guys,

I am trying to connect to the firebase in GCP from my Flutter App. But it is showing me the below error.

E/flutter ( 7544): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: [core/no-app] No Firebase App '[DEFAULT]' has been created - call Firebase.initializeApp()

Answer 1

Hi@akhtar,

After installing the package in your Flutter app, you need to initialize Firebase in your main function. You are probably invoking firebase before the app is initialized. All calls to firebase must come after .initializeApp(). So in your main function initialize first as shown below.

firebase.initializeApp();
var db = firebase.firestore();

To know more, join our Flutter Development Course today.