upgrade to 3.0.1 calling `EasyLoading.show` shows a error: `Null check operator used on a null value`

[Muzm]

accroding to this . I upgrade flutter_easyloading: 3.0.0 to 3.0.1. and call EasyLoading.show();, My page become flutter red error screen and a error shows:

Null check operator used on a null value

The relevant error-causing widget was: 
  GestureDetector file:///Users/.../main.dart:192:14
When the exception was thrown, this was the stack: 
#0      EasyLoadingTheme.boxShadow (package:flutter_easyloading/src/theme.dart:59:43)
#1      _Indicator.build (package:flutter_easyloading/src/widgets/container.dart:198:37)
#2      StatelessElement.build (package:flutter/src/widgets/framework.dart:4648:28)
#3      ComponentElement.performRebuild (package:flutter/src/widgets/framework.dart:4574:15)
#4      Element.rebuild (package:flutter/src/widgets/framework.dart:4267:5)
...

flutter_easyloading/src/theme.dart:59:

/// boxShadow color of loading
  static List<BoxShadow>? get boxShadow =>
      EasyLoading.instance.loadingStyle == EasyLoadingStyle.custom
          ? EasyLoading.instance.boxShadow! // error because added "!" ?
          : null;

Flutter/Dart info
[✓] Flutter (Channel stable, 2.2.3, on macOS 11.5.2 20G95 darwin-x64, locale
zh-Hans-CN)
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)

[github-actions]

Thanks for taking the time to open an issue. I will have a look and answer as soon as possible.

[nslogx]

please update to v3.0.2

[Muzm]

In 3.0.2 flutter_easyloading/src/theme.dart:59

  /// boxShadow color of loading
  static List<BoxShadow>? get boxShadow =>
      EasyLoading.instance.loadingStyle == EasyLoadingStyle.custom
          ? EasyLoading.instance.boxShadow ?? BoxShadow() 
          : null;

The boxShadow getter return value types is null or BoxShadow, not as expect List<BoxShadow>. correct code should be this:

  /// boxShadow color of loading
  static List<BoxShadow>? get boxShadow =>
      EasyLoading.instance.loadingStyle == EasyLoadingStyle.custom
          ? EasyLoading.instance.boxShadow ?? [BoxShadow()] // List<BoxShadow> : [BoxShadow()]
          : null;