PlatformException(error, TypeError: Cannot read properties of undefined (reading 'getInstance'), null, null) about amplitude-flutter

[yuhao900914]

Did you append the Amplitude-Javascript snippet in to your index.html? @JideGuru
https://developers.amplitude.com/docs/flutter-setup#flutter-web-support

[nanox77]

I have the same problem in Flutter Web 2.5.3

[JideGuru]

My bad. I've added the javascript snippet and now it's working

[mhkojoana]

how did you add the javascript snippet?? i'm currently experiencing that problem

[Spixz]

Hello, I have the same error even with the good import according to the flutter documentation. My app run in the web browser.

import 'package:amplitude_flutter/amplitude.dart';
import 'package:amplitude_flutter/identify.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  Amplitude.getInstance().init("my_key");

  runApp(const MyApp());
}

OR

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  final Amplitude analytics = Amplitude.getInstance(instanceName: "project");

    analytics.init("my_key");

    analytics.logEvent('MyApp startup', eventProperties: {
      'friend_num': 10,
      'is_heavy_user': true
    });

  runApp(const MyApp());
}

Thanks for your help.

Amplitude_flutter: ^3.13.0
Flutter Version: 3.3.9
Device: Chrome
Device OS and Version: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36