PhotonNetwork.Instantiate() doesn't work

Hello, sorry if I'm writing to wrong section, but anyway I can't instantiate player on network.

This is my script to connect:

 using UnityEngine;
 using System.Collections;
 
 public class NetworkManager : Photon.MonoBehaviour {
 
 public Transform respawn;
 
 private const string _VERSION = "1.0";
 
 void Start() {
 
 PhotonNetwork.autoJoinLobby = false;
 PhotonNetwork.ConnectUsingSettings(_VERSION);
 }
 
 public virtual void OnConnectedToMaster() {
 
 PhotonNetwork.JoinRandomRoom(); 
 }
 
 public void OnPhotonRandomJoinFailed() {
 
 PhotonNetwork.CreateRoom(null, new RoomOptions() { maxPlayers = 4 }, null);
 }
 
 public void OnJoinedRoom() {
 Debug.Log(Resources.Load("Player"));
 PhotonNetwork.Instantiate("Player", respawn.position, respawn.rotation, 0);
 }
 }
 

Using Debug.Log(Resources.Load("Player")); placed inside of OnJoinedRoom() I've found out that it locates Player. But it won't instantiate. Instead, it instantiates default Unity 3rd person controller. Any idea why?