The argument type 'void Function(bool?, int) Function(bool?, dynamic)' can't be assigned to the parameter type 'dynamic Function(bool?)?'

I'm trying to learn Flutter and I'm developing Todo appBut I got stuck with a bugHere is my code

List view

body: ListView.builder(          itemCount: todos.length,          itemBuilder: (context, index) {            return Todo(                taskName: todos[index][0],                completed: todos[index][1],                onChanged: (value, index) => checkboxChanged); // here the index argument is causing the error          },        )

and the Todo class

class Todo extends StatelessWidget {  final String taskName;  final bool completed;  Function(bool?)? onChanged; // the method   Todo(      {super.key,      required this.taskName,      required this.completed,      required this.onChanged});  @override  Widget build(BuildContext context) {    return Padding(      padding: EdgeInsets.only(left: 10, top: 10, right: 10),      child: Container(          padding: EdgeInsets.all(20),          decoration: BoxDecoration(              color: Colors.yellow, borderRadius: BorderRadius.circular(10)),          child: Row(            children: [              Checkbox(                value: completed,                onChanged: onChanged,                activeColor: Colors.black,              ),              Text(taskName),            ],          )),    );  }}

There comes up when I add the index parameter here

  void checkboxChanged(bool? value, int index) { // if I remove the indext parameter from here and from the Todo instantiation in the ListView the error will be gone. but I need that way    setState(() {      todos[index][1] = !todos[index][1];    });  }

The error message I'm facing is

The argument type 'void Function(bool?, int) Function(bool?, dynamic)' can't be assigned to the parameter type 'dynamic Function(bool?)?'

Any help is appreciated.Thanks...