Instantiate an object in network, using following code but it is not working

I Used Code Below, object instantiate normally but not with network. I attach photonview with prefab and prefab is in Resources folder. how to overcome this please someone help me. Thank you in advance

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class _Manager : Photon.MonoBehaviour {

	public GameObject PlayerPrefab;


	private void Start(){
		
			SpawnInNetwork ();	

	}
		
	public void SpawnInNetwork(){
		PhotonNetwork.Instantiate ("PlayerPrefab", Vector3.zero, Quaternion.identity, 0);
//		GameObject temp = Instantiate(PlayerPrefab) as GameObject;
//		temp.transform.position = new Vector3 (0, 0, 0);
//		Debug.Log ("Spawned dflaksjdf kdfja djflk flkdsjf ajflsd fskalf sakdf saflsjdlfj");

	}


}