using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Photon.Pun;

public class RoomManager : MonoBehaviourPunCallbacks
{
    void Start()
    {
        // ★修正
        // 「TestChara」を「Player」に変更
        PhotonNetwork.Instantiate("Player", new Vector3(0, 5, 0), Quaternion.identity);
    }
}
C#