TypeError: Null check operator used on a null value

[sentry-io]

Sentry Issue: GLUT-ASSISTANT-N-3N

TypeError: Null check operator used on a null value
  File "framework.dart", line 5736, in StatefulElement.state
    State<StatefulWidget> get state => _state!;
  File "framework.dart", line 4976, in Element.findRootAncestorStateOfType
    if (ancestor is StatefulElement && ancestor.state is T) {
  File "navigator.dart", line 2779, in Navigator.of
    navigator = context.findRootAncestorStateOfType<NavigatorState>() ?? navigator;
  File "dialog.dart", line 1425, in showDialog
    to: Navigator.of(
  File "dialog.dart", line 239, in codeCheckDialog
    showDialog(

This issue was automatically created by Sentry via 桂工助手N