onChangePlaybackState: Null check operator used on a null value in FixedTrimViewer

[ruwfr]

First of all, thanks for your work :)

In my app, I am using your video trimmer like described in the example app:

class _TrimPageState extends State<TrimPage> {
  final Trimmer _trimmer = Trimmer();
...

  @override
  void initState() {
    super.initState();
    _loadVideo();
  }

  void _loadVideo() async {
    await _trimmer.loadVideo(videoFile: File(widget.originalVideoPath));
    setState(() {
      _videoLoaded = true;
    });
  }

On line

video_trimmer/lib/src/trim_viewer/fixed_viewer/fixed_trim_viewer.dart

Line 293 in 3ed0e89

widget.onChangePlaybackState!(false);

I always get a Null check operator used on a null value, regardless of what video I have picked.

I am using
video_trimmer: ^5.0.0.

Is there something wrong in my setup? Any help is appreciated.