'No app check token for request' flutter firebase error

Go to Firebase console, then navigate to the storage tab. You should see something like this:

Click "Configure App Check" and there will be a config page. Ensure that your Firebase Storage is not set to enforce app check.

Of course, the ideal option would be to set up app check. Invertase recently released this plugin for setting it up with Flutter. You can check out the article here.

In my case I solved the problem by using the await typecasting. You are not getting the error related to app check token request. You are getting the error for not waiting for the completion of download. Just add the line after await which is required for the UploadTask finished and it works.

final Reference storageReference = firebase_storage.FirebaseStorage.instance
        .ref()
        .child("products")
        .child("product_$productId.png");
    String downloadURL;

    UploadTask uploadTask = storageReference.putFile(mFileImage);
     
    downloadURL = await (await uploadTask).ref.getDownloadURL();