Why does simply trying to add sound break literally everything

Question

So I have a script for an object that when shot explodes and it worked literally perfectly until I tried to add sound at which point it not only didn't play the sound but also stopped exploding, which was pretty rude of it.

Here's my code since I have no idea what's wrong: (Unity C#)

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

public class ShootyTarget : MonoBehaviour
{
    public float health;

    public GameObject destructionPrefab;


    public GameObject explosion;
    public GameObject shockwave;
    public GameObject debris;

    public AudioSource splodeSound;

    void Start()
    {
        splodeSound = gameObject.GetComponent<AudioSource>();
    }

    void FuckingDie()
    {
        splodeSound.Play();

        Instantiate(explosion, transform.position, transform.rotation);
        Destroy(gameObject);
        Instantiate(shockwave, transform.position, Quaternion.Euler(new Vector3(90, 0, 0)));
        Instantiate(destructionPrefab, transform.position, transform.rotation);
        Instantiate(debris, transform.position, transform.rotation);
    }

    public void takedamage(float amount)
    {
        health -= amount;
        if (health <= 0f)
        {
            FuckingDie();
        }
    }
}
```