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

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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()
Sep 3, 2020 in Others by akhtar
• 38,240 points
6,334 views

2 answers to this question.

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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();

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answered Sep 3, 2020 by MD
• 95,440 points
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answered Nov 21, 2020 by Milan
• 140 points

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