Unimplemented handling of missing static target, Flutter - flutter

Question

I'm writing my Flutter code but I keep getting the error of Unimplemented handling of missing the static target. there is no other error give so I don't know why I'm getting this and there is no way for me to debug it.
The error I'm getting is:
══════ Exception caught by widgets library ═══════════════════════════════════
The following _CompileTimeError was thrown building Wrapper(dirty, dependencies: [InheritedProvider<User>], state: _Wrapper#576d6):
Unimplemented handling of missing static target
The relevant error-causing widget was
Wrapper
lib\main.dart:28
When the exception was thrown, this was the stack
#0 StatefulElement.build
package:flutter/…/widgets/framework.dart:4334
#1 ComponentElement.performRebuild
package:flutter/…/widgets/framework.dart:4223
#2 Element.rebuild
package:flutter/…/widgets/framework.dart:3947
#3 StatefulElement.update
package:flutter/…/widgets/framework.dart:4413
#4 Element.updateChild
package:flutter/…/widgets/framework.dart:2977
...
════════════════════════════════════════════════════════════════════════════════
Reloaded 5 of 544 libraries in 350ms.
════════ Exception caught by widgets library ═══════════════════════════════════
Unimplemented handling of missing static target
The relevant error-causing widget was
Wrapper
My code is :
import 'package:sociagrowapp/models/user.dart';
import 'package:sociagrowapp/HomePages/Home.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:sociagrowapp/Authenticate/authenticate.dart';
//import 'package:package_info/package_info.dart';
import 'package:flutter_spinkit/flutter_spinkit.dart';
import 'package:sociagrowapp/services/firestore.dart';
import 'package:http/http.dart' as http;
class Wrapper extends StatefulWidget {
#override
createState() => _Wrapper();
}
class _Wrapper extends State<Wrapper> {
#override
Widget build(BuildContext context) {
Future getversionnumber() async {
var data = http.get('https://sociagrow.com/version.html');
print(data);
return data;
}
return FutureBuilder(
future: getversionnumber(),
builder: (BuildContext context, snapshot) {
if (snapshot.hasData) {
final user = Provider.of<User>(context);
print(user);
var version = snapshot.data;
// return either the Home or Authenticate widget
if (version == false) {
return Text('Oh no You need to update');
} else {
if (user == null) {
print('Should Changed 3');
return Scaffold(body: Authenticate());
} else {
return PageData();
}
}
} else {
return SpinKitThreeBounce(
color: Colors.blue,
);
}
});
}
}
The strange part is that when I debug it in visual studio code it runs but when I resave and hot reload it I get this error. The problem is not in the http.get() because I got the error with other future functions and firestore as well. really strange though I haven't encountered this type of error and I can't find anything about this error in the internet that could be helpful.

Answer 1

May be hot-reload cache lead to this problem, I just encounter the same problem and I fixed it by stop project then restart it.

Answer 2

You can solve this problem by stopping the debugging or terminate the app.
Then, try to restart or debug the app.