NullReferenceException: Object reference not set to an instance of an object? SOLVED

I'm trying to make an enemy throw bombs at the player and their NPC allies in my game I'm creating. Everything runs 100% fine. However I keep on getting this error "NullReferenceException: Object reference not set to an instance of an objectThrowBomb.OnTriggerEnter (UnityEngine.Collider other) (at Assets/ThrowBomb.cs:68)". This only happens when the bomb hits an allied npc which I have as prefabs (not sure if that means much).

As I'm using this project as a way to learn more about Unity, I would like to find out why this is happening, even though it's not actually affecting my game play. If anyone has any ideas or suggestions on why this is happening I would appreciate the help. The bombs spawn from a enemy that just has a script to create the bombs then the bombs them self have this script attached to them. Here's my code.

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class ThrowBomb : MonoBehaviour {
5.  
6.     public float speed;
7.     public GameObject Explosion;
8.     public float Life =3f;
9.     public GameObject Soldier;
10.     public float damage;
11.     public bool TakeDamage;
12.  
13.     private HumanHealth humanhealth;
14.     private Health health;
15.    
16.     void Start ()
17.     {
18.         float x = transform.position.x;
19.         float z = transform.position.z;
20.         transform.position = new Vector3(x, 1f, z);
21.         GetComponent<Rigidbody>().velocity = transform.forward * speed;
22.     }
23.  
24.     void FixedUpdate ()
25.     {
26.         Life -= Time.deltaTime;
27.  
28.         if (Life <= 0)
29.         {
30.             Instantiate(Explosion, gameObject.transform.position, gameObject.transform.rotation);
31.             Destroy(gameObject);
32.         }
33.     }
34.  
35.     void OnTriggerEnter (Collider other)
36.     {
37.         if (other.gameObject.CompareTag ("Player")) {
38.             Soldier = other.gameObject;
39.             health = Soldier.GetComponent<Health> ();
40.             Debug.Log ("Hello Player");
41.             TakeDamage = true;
42.             Instantiate (Explosion, gameObject.transform.position, gameObject.transform.rotation);
43.  
44.             if (TakeDamage == true) {
45.                 TakeDamage = false;
46.                 damage = 15;
47.                 health.armor = health.armor - damage;
48.        
49.        
50.                 if (health.armor <= 0) {
51.                     health.UnitsHealth = health.UnitsHealth + health.armor;
52.                     health.armor = 0;
53.                 }
54.                 Destroy (gameObject);
55.             }
56.         }
57.  
58.         if (other.gameObject.CompareTag ("Human")) {
59.             Soldier = other.gameObject;
60.             humanhealth = Soldier.GetComponent<HumanHealth> ();
61.             Debug.Log ("Hello Soldier");
62.             TakeDamage = true;
63.             Instantiate (Explosion, gameObject.transform.position, gameObject.transform.rotation);
64.         }
65.         if (TakeDamage == true) {
66.             TakeDamage = false;
67.             damage = 15;
68.             humanhealth.HumanArmor = humanhealth.HumanArmor - damage;
69.  
70.            
71.             if (humanhealth.HumanArmor <= 0) {
72.                 humanhealth.HumanHp = humanhealth.HumanHp + humanhealth.HumanArmor;
73.                 humanhealth.HumanArmor = 0;
74.             }
75.             Destroy (gameObject);
76.         }
77.     }
78. }

 

only object in line 68 is "humanHealth", so I'm guessing "allied npcs" don't have a "HumanHealth" script attached to them (from line 60)

 

I figured it out, what you said made me think and I dumbly put an extra tag of Human on the parent of the object, so the script was trying to access that too. Thanks for your help.