我在Unity中为敌人编写AI代码，但是Unity给了我这个错误。它说错误在第21行，但是我找不到它。任何帮助都是感激的！

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class EnemyController : MonoBehaviour
{
    public float lookRadius = 10f;

    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }
}
    void OnDrawGizmosSelected()
{
    Gizmos.color = Color.red;
    Gizmos.DrawWireSphere(transform.position, lookRadius);
}