Bug Why doesn't spawn work? What is the best way for me to create a player and a camera?

using UnityEngine;
using Mirror;
public class LobbyManager : NetworkManager
{

public Spawn spawn;
public GameObject MyCamera;

public virtual void OnServerAddPlayer(NetworkConnection conn, short playerControllerId)
{
foreach (var cars in spawn.cars)
{

GameObject player = Instantiate(cars.car3, new Vector3(-0.1462975f, 26.15f, 80f),
Quaternion.Euler(0,0f, 0));
GameObject camera = Instantiate(MyCamera, new Vector3(-0.1462975f, 26.15f, 80f), Quaternion.Euler(0, 0f, 0));
NetworkServer.AddPlayerForConnection(conn, player, playerControllerId);
NetworkServer.AddPlayerForConnection(conn, camera, playerControllerId);

}
}
}