ThreeDModel function not working

[Shifty34]

@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Cylinder Board'),
),
body: Container(
color: Colors.white,
child: Stack(
children: [
Positioned(
left: 0,
top: 0,
child: ThreeDModel(
path: 'assets/board(1).obj',
scale: Vector3.all(0.02),
rotation: Vector3(0, 1, 0),
lighting: true,
texturePath: 'assets/board(2).mtl',
),
),
...cylinders.map((cylinder) {
return Positioned(
left: cylinder.x,
top: cylinder.y,
child: ThreeDModel(
path: 'assets/cylinder (1).obj',
scale: Vector3.all(0.02),
rotation: Vector3(0, 1, 0),
lighting: true,
texturePath: 'assets/cylinder (1).mtl',
),
);
}).toList(),
],
),
),
);
}
}

For this section of my code, although my asset path is correct and I have the latest version of the Flutter_3d_obj, the ThreeDModel lines show the error of 'The method 'ThreeDModel' isn't defined for the type '_BoardState' and that the import of this dependency is unused.