Помогите с кодом пожалуйста

Когда делаю билд игры и захожу в нее код не работает, а в редакторе все работает.
Вот код:
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class FieldOfView : MonoBehaviour
{
public float radius;
[Range(0, 360)]
public float angle;

public GameObject playerRef;

public LayerMask targetMask;
public LayerMask ObstacleMask;
public bool canSeePlayer;


private void Start()
{
playerRef = GameObject.FindGameObjectWithTag("Player");
StartCoroutine(FOVRoutine());
}

private IEnumerator FOVRoutine()
{
WaitForSeconds wait = new WaitForSeconds(0.2f);

while (true)
{
yield return wait;
FieldOfViewCheck();
}
}
private void FixedUpdate()
{
if (canSeePlayer == true)
{
gameObject.GetComponent<AI_Monster>().AI_Enemy = AI_Monster.AI_State.Chase;
}
}

private void FieldOfViewCheck()
{
Collider[] rangeChecks = Physics.OverlapSphere(transform.position, radius, targetMask);

if (rangeChecks.Length != 0)
{
Transform target = rangeChecks[0].transform;
Vector3 directionToTarget = (target.position - transform.position).normalized;
if (Vector3.Angle(transform.forward, directionToTarget) < angle / 2)
{
float distanceToTarget = Vector3.Distance(transform.position, target.position);
if (!Physics.Raycast(transform.position, directionToTarget, distanceToTarget, ObstacleMask))
canSeePlayer = true;

else

if (playerRef.GetComponent<SC_FPSController>().Sprint == true)
{
canSeePlayer = true;
}
else
{
canSeePlayer = false;
}
}
else
canSeePlayer = false;
}
else if (canSeePlayer)
canSeePlayer = false;
}
}