Error: Operation SetProperties(252) Not Allowed On Current Server (NameServer)


Hello I Need Help The Code I Use For Joining Different Servers Is Not Working It Just Shows And Error Here Is The Error  Operation SetProperties(252) not allowed on current server (NameServer)

Here Is The Code:

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using Photon.VR;

public class ChangeServer : MonoBehaviour


  public string AppID;

  public string VoiceID;

  private void OnTriggerEnter(Collider other)


    if (other.gameObject.CompareTag("HandTag"))


      PhotonVRManager.ChangeServers(AppID, VoiceID);