Can't see other players on the server

Hello I have followed the Photon tutorial to get the network working, it worked on my other project but every time I try to smooth the network movement out I can't see the other player could anyone tell me why this is happening?

 using UnityEngine;
 using Photon;
 
 public class NetworkPlayer : Photon.MonoBehaviour
 {
     private Vector3 correctPlayerPos;
     private Quaternion correctPlayerRot;
     
     // Update is called once per frame
     void Update()
     {
         if (!photonView.isMine)
         {
             transform.position = Vector3.Lerp(transform.position, this.correctPlayerPos, Time.deltaTime * 5);
             transform.rotation = Quaternion.Lerp(transform.rotation, this.correctPlayerRot, Time.deltaTime * 5);
         }
     }
     
     void OnPhotonSerializeView(PhotonStream stream, PhotonMessageInfo info)
     {
         if (stream.isWriting)
         {
             // We own this player: send the others our data
             stream.SendNext(transform.position);
             stream.SendNext(transform.rotation);
             
         }
         else
         {
             // Network player, receive data
             this.correctPlayerPos = (Vector3)stream.ReceiveNext();
             this.correctPlayerRot = (Quaternion)stream.ReceiveNext();
         }
     }
 }