NullReferenceException: Help

[gringofxs]

I have this script, everything is link but stil display this error. how can be fix?

NullReferenceException: Object reference not set to an instance of an object
LoadImage.Update () (at Assets/LoadImage.cs:25)

usingUnityEngine;
usingUnityEngine.UI;
usingSystem.Collections;

[ExecuteInEditMode]

publicclassLoadImage: MonoBehaviour
{
stringurl = “http://nfx.comuv.com/a.jpg”;
Texture2Dimg;

publicSpriteRendererspriteRenderer;
publicImageFilling;
publicGameObjectLoading;
WWWimgLink;
//Usethisforinitialization
voidStart()
{
spriteRenderer.sprite = null;
StartCoroutine(LoadImg());

}
voidUpdate ()
{
if(!imgLink.isDone)
Filling.fillAmount = imgLink.progress;
}
IEnumeratorLoadImg()
{
yieldreturn0;
//spriteRenderer.sprite = null;
imgLink = newWWW(url);
yieldreturnimgLink;

img = imgLink.texture;
Spritesprite = Sprite.Create(img, newRect(0, 0, img.width, img.height), newVector2(0.5f, 0.5f));
spriteRenderer.sprite = sprite;
Loading.SetActive (false);
}

voidOnGUI()
{

}
}

[LeftyRighty]

use these Using code tags properly - Unity Engine - Unity Discussions not quotes when pasting in code.

You’re trying to access “imgLink” in Update() before calling the coroutine which initializes it.