Hello i am getting a null error when my player tries to collide with a coin,Hello,i get this null error when my player collides with a coin

Questions & Answers
1

using UnityEngine;

public class CollectCoin : MonoBehaviour
{
public AudioSource coinFX;

void OnTriggerEnter(Collider other)
{
    coinFX.Play();
    ColectableControl.coinCount += 1;
    this.gameObject.SetActive(false);
}

}

The error comes from this code and the error is saying
ArgumentNullException: Value cannot be null.
Parameter name: source
UnityEngine.AudioSource.Play () (at :0)
CollectCoin.OnTriggerEnter (UnityEngine.Collider other) (at Assets/Scripts/Colectables/CollectCoin.cs:9)

,using UnityEngine;

public class CollectCoin : MonoBehaviour
{
public AudioSource coinFX;

void OnTriggerEnter(Collider other)
{
    coinFX.Play();
    ColectableControl.coinCount += 1;
    this.gameObject.SetActive(false);
}

}

The null error comes from this script