Bug hello, I can’t understand why it gives an error although I did it from the

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5.  
6. public class ItemCollector : MonoBehaviour
7. {
8.     private int cherries = 0;
9.  
10.     [SerializeField] private Text cherriesText;
11.  
12.     [SerializeField] private AudioSource collectionSoundEffect;
13.  
14.     private void OnTriggerEnter2D(Collider2D collision)
15.     {
16.         if (collision.gameObject.CompareTag("Cherry"))
17.         {
18.             collectionSoundEffect.Play();
19.             Destroy(collision.gameObject);
20.             cherries++;
21.             cherriesText.text = "Cherries: " + cherries;
22.         }
23.     }
24. }

 

NullReferenceException: ссылка на объект, не подвергшийся воздействию объекта
ItemCollector.OnTriggerEnter2D (коллизия UnityEngine.Collider2D) (в Assets/Scripts/ItemCollector.cs:21)

 

How to fix a NullReferenceException error

https://forum.unity.com/threads/how-to-fix-a-nullreferenceexception-error.1230297/

Three steps to success:
- Identify what is null <-- any other action taken before this step is WASTED TIME
- Identify why it is null
- Fix that