Flutter flutter_webview_plugin错误[NSNull长度]：无法识别的选择器已发送到ios上的实例

flutter pub upgrade

import 'package:flutter/material.dart';
import 'package:flutter_webview_plugin/flutter_webview_plugin.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('WebView Example'),
        ),
        body: WebViewExample(),
      ),
    );
  }
}

class WebViewExample extends StatefulWidget {
  @override
  _WebViewExampleState createState() => _WebViewExampleState();
}

class _WebViewExampleState extends State<WebViewExample> {
  final FlutterWebviewPlugin flutterWebviewPlugin = FlutterWebviewPlugin();

  @override
  void initState() {
    super.initState();
    flutterWebviewPlugin.onStateChanged.listen((state) {
      print("State: $state");
    });
  }

  @override
  Widget build(BuildContext context) {
    return WebviewScaffold(
      url: 'https://www.example.com',
      appBar: AppBar(
        title: Text('WebView'),
      ),
    );
  }

  @override
  void dispose() {
    flutterWebviewPlugin.dispose();
    super.dispose();
  }
}

- (void)handleFlutterCallback:(NSDictionary *)arguments {
  id data = arguments[@"data"];
  if ([data isKindOfClass:[NSNull class]]) {
    data = nil;
  }
  // 处理数据
}

flutter clean
flutter build ios