"NullReferenceException: Object reference not set to an instance of an object"

I was using this code to connect my players to the object, but i get this error:

 NullReferenceException: Object reference not set to an instance of an object
 NetworkCharacter.Update () (at Assets/Scripts/NetworkCharacter.cs:10)
 

Heres the code:

 using UnityEngine;
 
 public class NetworkCharacter : Photon.MonoBehaviour
 {
     private Vector3 correctPlayerPos = Vector3.zero; // We lerp towards this
     private Quaternion correctPlayerRot = Quaternion.identity; // We lerp towards this
     // 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);
 
             myThirdPersonController myC = GetComponent<myThirdPersonController>();
             stream.SendNext((int)myC._characterState);
         }
         else
         {
             // Network player, receive data
             this.correctPlayerPos = (Vector3)stream.ReceiveNext();
             this.correctPlayerRot = (Quaternion)stream.ReceiveNext();
 
             myThirdPersonController myC = GetComponent<myThirdPersonController>();
             myC._characterState = (CharacterState)stream.ReceiveNext();
         }
     }
 }
 

Ive been trying to figure it out, but i cant find the answer. Thanks!