Fixed a bug introduced by upgrading to Flutter 3.0.0

[Stausssi]

WidgetBindings are non-nullable starting in Flutter 3.0.0

[Stausssi]

Also, since this project seems abandoned, you can simply include the following lines in your pubspec.yaml:

dependency_overrides:
  learning_input_image:
    git:
      url: https://github.com/Stausssi/learning_input_image
      path: packages/learning_input_image

This will override the dependency with my provided hotfix.