AI can't walk to a target after his friend get kill. Please help.

Getting Started
1

If I put a little group of these AI it still good (Not distinguish) but if I put them to a huge armed force they are going to be as the video.

As you can see in the video. Now if I delete a Rregibody then the AI is going to work correctly. So I think the cause is this Rigibody I guess.

But I can’t fix it by just delete it because I still need it for some purposes.

The code that may connect with this RIgibody is this. (I need it stop woking after the AI get kill.)

row 54

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class detectHit : MonoBehaviour
{
    public GameObject HP;

    public Slider healthbar;
    Animator anim;
    public string opponent;

 
    void Start()
    {

     
        anim = GetComponent<Animator>();
    


    }

    void OnTriggerEnter(Collider other)

     
    {
        {
            if (other.gameObject.tag != opponent) return;

            {
               // if (Input.GetMouseButton(0)) ;

                {

                    healthbar.value -= 30;
                }

            } }
     
        {
            if (healthbar.value <= 0)

               anim.SetBool("isDead", true);
         

            {
                //if (healthbar.value <= 0)
                 //   Destroy(GameObject.Find("AIhb"));

                {
                    if (healthbar.value<=0)

                        Object.Destroy(GetComponent<Rigidbody>());
                    {
                        if(healthbar.value<=0)
                            Destroy(GetComponent<BoxCollider>());
                    }

                   if(healthbar.value<=0)
                    {
                       HP.SetActive(false);
                    }

                   else
                    {
                        HP.SetActive(true);
                    }
                }
            
               
            }

         
        }

     

    }



    void Update()
    {
        if (Input.GetButton("Fire1"))
        {
            anim.SetBool("isHit", true);
        }
        else
            anim.SetBool("isHit", false);



    }
}

Thank you.

ps. Sorry for my bad English

2

Fixed.

Thank you.