title: Flutter WEB: Firebase: No Firebase App '[DEFAULT]' has been created
body: <p>After adding these dependencies to my pubspec.yaml in my flutter WEB project</p>
  <pre><code>  firebase_auth: ^0.18.4+1
    cloud_firestore: ^0.14.4
    firebase_core: ^0.5.3
  </code></pre>
  <p>and these below to my web/index.html file</p>
  <pre><code>&lt;script src=&quot;https://www.gstatic.com/firebasejs/8.2.1/firebase-app.js&quot;&gt;&lt;/script&gt;
    &lt;script src=&quot;https://www.gstatic.com/firebasejs/8.2.1/firebase-auth.js&quot;&gt;&lt;/script&gt;
    &lt;script src=&quot;https://www.gstatic.com/firebasejs/8.2.1/firebase-firestore.js&quot;&gt;&lt;/script&gt;
  
  &lt;script&gt;
    // Your web app's Firebase configuration
    var firebaseConfig = {
      apiKey: &quot;xxxxxxxxxxxxxxxxxxxxxxxx&quot;,
      authDomain: &quot;xxxxxxxxxxxxxxxxxxx&quot;,
      projectId: &quot;xxxxxxxxxxxxxxxxxxxx&quot;,
      storageBucket: &quot;xxxxxxxxxxxxxxxxx&quot;,
      messagingSenderId: &quot;xxxxxxxxxxxxxxxx&quot;,
      appId: &quot;xxxxxxxxxxxxxxxxxxx&quot;
    };
    // Initialize Firebase
    firebase.initializeApp(firebaseConfig);
  &lt;/script&gt;
  
  
  </code></pre>
  <p>when I try to rebuild the WEB app I get:</p>
  <blockquote>
  <p>Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp() (app/no-app).</p>
  </blockquote>
  <p>any error related to this?
  additional error:</p>
  <pre><code>FirebaseError: Firebase: No Firebase App '[DEFAULT]' has been created - call Firebase App.initializeApp() (app/no-app).
      at Object.f [as app] (https://www.gstatic.com/firebasejs/8.2.1/firebase-app.js:1:16867)
      at Object.app$ [as app] (http://localhost:40783/packages/firebase_core_web/src/interop/core.dart.lib.js:32:101)
      at initializeApp (http://localhost:40783/packages/firebase_core_web/firebase_core_web.dart.lib.js:81:25)
      at initializeApp.next (&lt;anonymous&gt;)
      at runBody (http://localhost:40783/dart_sdk.js:37976:34)
      at Object._async [as async] (http://localhost:40783/dart_sdk.js:38007:7)
      at firebase_core_web.FirebaseCoreWeb.new.initializeApp (http://localhost:40783/packages/firebase_core_web/firebase_core_web.dart.lib.js:74:20)
      at initializeApp (http://localhost:40783/packages/firebase_core/firebase_core.dart.lib.js:122:59)
      at initializeApp.next (&lt;anonymous&gt;)
      at runBody (http://localhost:40783/dart_sdk.js:37976:34)
      at Object._async [as async] (http://localhost:40783/dart_sdk.js:38007:7)
      at Function.initializeApp (http://localhost:40783/packages/firebase_core/firebase_core.dart.lib.js:121:20)
      at main$ (http://localhost:40783/packages/vibeland/widgets/subscription_widget.dart.lib.js:9807:36)
      at main$.next (&lt;anonymous&gt;)
      at runBody (http://localhost:40783/dart_sdk.js:37976:34)
      at Object._async [as async] (http://localhost:40783/dart_sdk.js:38007:7)
      at main$ (http://localhost:40783/packages/vibeland/widgets/subscription_widget.dart.lib.js:9805:18)
      at main (http://localhost:40783/web_entrypoint.dart.lib.js:34:27)
      at main.next (&lt;anonymous&gt;)
      at http://localhost:40783/dart_sdk.js:37956:33
      at _RootZone.runUnary (http://localhost:40783/dart_sdk.js:37810:58)
      at _FutureListener.thenAwait.handleValue (http://localhost:40783/dart_sdk.js:32771:29)
      at handleValueCallback (http://localhost:40783/dart_sdk.js:33319:49)
      at Function._propagateToListeners (http://localhost:40783/dart_sdk.js:33357:17)
      at async._AsyncCallbackEntry.new.callback (http://localhost:40783/dart_sdk.js:33082:27)
      at Object._microtaskLoop (http://localhost:40783/dart_sdk.js:38071:13)
      at _startMicrotaskLoop (http://localhost:40783/dart_sdk.js:38077:13)
      at http://localhost:40783/dart_sdk.js:33574:9
  
  </code></pre>