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Flutter Web App, Firebase.auth not working. Tried to call a non-function, such as null. 'dart.global.firebase.auth'

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广开言路
广开言路 2021-01-22 21:24

I am trying to implement a simple Flutter Web App, with Firebase Auth.

I am getting the error NoSuchMethodError: tried to call a non-function, such as null: \'dart.

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  • 萌比男神i
    2021-01-22 21:34

    Turns out I placed this

    <!-- Firebase Configuration-->
  <!-- The core Firebase JS SDK is always required and must be listed first -->
  <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>

  <!-- TODO: Add SDKs for Firebase products that you want to use
      https://firebase.google.com/docs/web/setup#available-libraries -->
  <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-auth.js"></script>
  <!-- <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-analytics.js"></script>  -->
  <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script>
  <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-firestore.js"></script>
  <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-storage.js"></script>
  <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-database.js"></script>

  <script>
    // Your web app's Firebase configuration
    var firebaseConfig = {
      //my info
    };
    // Initialize Firebase
    firebase.initializeApp(firebaseConfig);
    // firebase.analytics();
  </script>
  <!-- End of Firebase Configuration-->

    In the wrong place.

    It should be inside the <head> tag.

    Side note, I had this <script src="https://www.gstatic.com/firebasejs/7.15.5/firebase-app.js"></script> twice, so I deleted the one below.

    Finally, thanks to David Iglesias for his answer here: https://github.com/FirebaseExtended/flutterfire/issues/2860#issuecomment-651313186.

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