TypeError: Null check operator used on a null value

[sentry-io]

Sentry Issue: GLUT-ASSISTANT-N-3F

TypeError: Null check operator used on a null value
  File "framework.dart", line 958, in State.context
    return _element!;
  File "queryScore.dart", line 66, in _QueryBodyState.preprocess.<T>
    ScaffoldMessenger.of(context).removeCurrentSnackBar();
  File "function.dart", in _Closure.call
  File "dialog.dart", line 205, in codeCheckDialog._codeCheck._next2
    callback();
  File "dialog.dart", line 216, in codeCheckDialog._codeCheck._next.<T>
    await login(AppData.persistentData["username"] ?? "", AppData.persistentData["password"] ?? "", textFieldController.text).then((Stri {snip}
...
(6 additional frame(s) were not displayed)

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