Null Reference Exception Hunt !

NullReferenceException: Object reference not set to an instance of an object FireBlaster.Update () (at Assets/Scripts/FireBlaster.cs:59)

Hi there, I'm following a tutorial on YT by Gamer To Game Developer, and I've been scratching my head over this Null Reference Exception for a day and a half now. I've tried every capitalization combo and tracing each line of code before and after the error, but I can't seem to find a thing. The game does exactly what it's supposed to as of now, but I think leaving an error be is just asking for trouble in the future. I'd appreciate any help!

Code:

 using UnityEngine;
 using System.Collections;
 
 /// <summary>
 /// This script is attached to the player and allows
 /// them to fire the Blaster projectile.
 /// </summary>
 
 public class FireBlaster : MonoBehaviour {
 
     //Variables Start___________________________________
 
     //The blaster projectile is attached to this in the 
     //inspector
 
     public GameObject blaster;
 
 
     //Quick references.
 
     private Transform myTransform;
 
     private Transform cameraHeadTransform;
 
 
     //The position at which the projectile should be
     //instantiated.
 
     private Vector3 launchPosition = new Vector3();
 
 
     //Used to control the rate of fire.
 
     private float fireRate = 0.2f;
 
     private float nextFire = 0;
 
     //Variables End_____________________________________
 
 
     // Use this for initialization
     void Start () 
     {
         myTransform = transform;
 
         cameraHeadTransform = myTransform.FindChild("CameraHead");
     }
 
     // Update is called once per frame
     void Update () 
     {
         if(Input.GetButton("Fire Weapon") && Time.time > nextFire)
         {    
             nextFire = Time.time + fireRate;
 
             //The launch position of the projectile will be just in front
             //of the CameraHead.
 
             launchPosition = cameraHeadTransform.TransformPoint(0, 0, 0.2f);    
 
 
             //Create the blaster projectile at the launchPosition and tilt its angle
             //so that its horizontal using the angle eulerAngles.x + 90.
 
             Instantiate(blaster,launchPosition,Quaternion.Euler(cameraHeadTransform.eulerAngles.x + 90,
                 myTransform.eulerAngles.y, 0));
         }
     }
 }
 
 
 
 
 
 
 
 So what I have here is essentially code that is controlling what speed, angle, and location my blaster (a GameObject, for reference) fires from.