references runtime script in scene file. Fixing!

when im using this script with my UI Text to count my objects…

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

public class savakt : MonoBehaviour {

public Text countText;
private int count;

void Start ()
{

count = 0;
SetCountText ();

}
void OnTriggerEnter(Collider other)
{
if (other.gameObject.CompareTag (“PickUp”))
{
other.gameObject.SetActive (false);
count = count + 1;
SetCountText();
}
}
void SetCountText ()
{
countText.text = "Count: " + count.ToString ();

}
}

i recive this error ( references runtime script in scene file. Fixing! )
HELP PLEASE

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

public class savakt : MonoBehaviour {

    public Text countText;
    private int count;

    void Start ()
    {
   
        count = 0;
        SetCountText ();

    }
    void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.CompareTag ("PickUp"))
        {
            other.gameObject.SetActive (false);
            count = count + 1;
            SetCountText();
        }
    }
    void SetCountText ()
    {
        countText.text = "Count: " + count.ToString ();

        }
    }

sory, i’m new here