flutter - _AssertionError ('package:flutter/src/widgets/framework.dart': 断言失败: line 5131 pos 14: '_dependents.isEmpty': is not true.)

Question

发生异常。_AssertionError（'package:flutter/src/widgets/framework.dart'：断言失败：第 5131 行 pos 14：'_dependents.isEmpty'：不正确。）`

import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:getxpractice/navpage2.dart';

class Navpage1 extends StatelessWidget {
  const Navpage1({Key? key}) : super(key: key);

  @override

  Widget build(BuildContext context) {
    return GetMaterialApp(
      home: Scaffold(
          appBar: AppBar(
            title: Text("navigator"),
          ),
          body: Center(
            child:
                Column(mainAxisAlignment: MainAxisAlignment.center, children: [
              ElevatedButton(
                  onPressed: () {
                    Get.to(
                      Navpage2(),
                    );
                  },
                  child: Text("Page 2")),
            ]),
          )),
    );
  }
}

`

标签： fluttervisual-studio-codeflutter-getx