[Unity]PUN2で RPCメソッドが使えない

UnityでPUN2を使ってオンラインボードゲームを作っています。
ターンをそれぞれのプレイヤーで同期させようと思い、RPCを使おうとしましたが、エラーが出て使えません。

Console
1Assets/Scripts/TileMap.cs(95,30): error CS0121:
2The call is ambiguous between the following methods or properties:
3'PhotonView.RPC(string, object, string)' and 'PhotonView.RPC(string, RpcTarget, params object[])'

スクリプト

TileMap
1using System;
2using System.Collections;
3using System.Collections.Generic;
4using System.Linq;
5using UnityEngine;
6using UnityEngine.Tilemaps;
7using Photon;
8using Photon.Pun;
9using Photon.Realtime;
10
11public class TileMap : MonoBehaviourPunCallbacks, IPunObservable
12{
13    [SerializeField] Tilemap tilemap = default;
14
15    public GameObject RedTile;
16    public GameObject BlueTile;
17    public bool HasTile = false;
18    public string turn = "Red";
19    public Vector3Int[] PutTiles = new Vector3Int[0];
20
21    private Vector3 screenToWorldPointPosition;
22    public NetworkManager networkManager;
23    public bool IsMyTurn;
24    PhotonView m_photonView = null;
25
26    private void Start()
27    {
28        m_photonView = GetComponent<PhotonView>();
29    }
30    void Update()
31    {
32        Vector3 position;
33        // Vector3でマウス位置座標を取得する
34        position = Input.mousePosition;
35        // Z軸修正
36        position.z = 10;
37        // マウス位置座標をスクリーン座標からワールド座標に変換する
38        screenToWorldPointPosition = Camera.main.ScreenToWorldPoint(position);
39
40        if (turn == "Red")
41        {
42            Debug.Log("赤のターン");
43            if (networkManager.Character == "Red")
44            {
45                IsMyTurn = true;
46            }
47            else
48            {
49                IsMyTurn = false;
50            }
51        }
52
53        if (turn == "Blue")
54        {
55            Debug.Log("青のターン");
56            if (networkManager.Character == "Blue")
57                IsMyTurn = true;
58            else
59                IsMyTurn = false;
60        }
61
62        if (IsMyTurn)
63        {
64            if (Input.GetMouseButtonUp(0))
65            {
66                // 座標情報を渡す
67                clickedPosition(screenToWorldPointPosition, turn);
68            }
69        }
70    }
71
72    public void clickedPosition(Vector3 position, string turnstr)
73    {
74        HasTile = tilemap.HasTile(tilemap.WorldToCell(position));
75        if (HasTile && !(PutTiles.Contains(tilemap.WorldToCell(position))))
76        {
77            Debug.Log($"{turn} putting a tile.");
78            Array.Resize(ref PutTiles, PutTiles.Length + 1);
79            PutTiles[PutTiles.Length - 1] = tilemap.WorldToCell(position);
80            if (turn == "Blue")
81            {
82                PhotonNetwork.Instantiate("Bluetile", tilemap.GetCellCenterWorld(tilemap.WorldToCell(position)), Quaternion.identity);
83            }
84            if (turn == "Red")
85            {
86                PhotonNetwork.Instantiate("Redtile", tilemap.GetCellCenterWorld(tilemap.WorldToCell(position)), Quaternion.identity);
87            }
88
89            if (turn == "Red")
90            {
91                turn = "Blue";
92            }
93            else
94            {
95                turn = "Red";
96                m_photonView.RPC("Change", RpcTarget.MasterClient, turn); //ここでエラー
97            }
98        }
99    }
100
101    public void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
102    {
103        if (stream.IsWriting)
104        {
105            stream.SendNext(turn);
106        }
107        else
108        {
109            turn = (string)stream.ReceiveNext();
110        }
111    }
112
113    [PunRPC]
114    void Change(string turn_str)
115    {
116        turn = turn_str;
117    }
118}
119

「The call is ambiguous between the following methods or properties: 'PhotonView.RPC(string, object, string)' and 'PhotonView.RPC(string, RpcTarget, params object[])'」とあり、引数の間違いの可能性があると思ったのですが、コードを見る限り無さそうなので質問させていただきました。