title: MissingPluginException(No implementation found for method init on channel com.ryanheise.just_audio.methods)
body: <p>I am building a desktop application using flutter where I need to play audio files from local storage and for this I am using <a href="https://pub.dev/packages/just_audio" rel="nofollow noreferrer">just_audio</a> flutter package since it supports Windows. But I Couldn't find any examples of it for windows. I have coded something like this-</p>
  <pre><code>import 'package:just_audio/just_audio.dart';
  ...
  
  void main() =&gt; runApp(MyApp());
  
  class MyApp extends StatefulWidget {
    @override
    _MyAppState createState() =&gt; _MyAppState();
  }
  
  class _MyAppState extends State&lt;MyApp&gt; with WidgetsBindingObserver {
    final _player = AudioPlayer();
  
    @override
    void initState() {
      super.initState();
      ...
      _init();
    }
     
    Future&lt;void&gt; _init() async {
      await _Player.setFilePath('C:/Users/Admin/Downloads/test.wav', preload: true);
    }
    ...
  </code></pre>
  <p>The await call never finishes and I am getting the following error:</p>
  <pre><code>[ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: MissingPluginException(No implementation found for method init on channel com.ryanheise.just_audio.methods)
  #0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:165:7)
  &lt;asynchronous suspension&gt;
  #1      MethodChannelJustAudio.init (package:just_audio_platform_interface/method_channel_just_audio.dart:13:5)
  &lt;asynchronous suspension&gt;
  #2      AudioPlayer._setPlatformActive.setPlatform (package:just_audio/just_audio.dart:1255:13)
  &lt;asynchronous suspension&gt;
  #3      AudioPlayer.load (package:just_audio/just_audio.dart:708:26) 
  &lt;asynchronous suspension&gt;
  #4      AudioPlayer.setAudioSource (package:just_audio/just_audio.dart:683:18)
  &lt;asynchronous suspension&gt;
  </code></pre>