Cannot be an iterator block because `void' is not an iterator interface type.

Unity Engine
1

I am trying to make something shrink when my player ‘eats’ it. So far I found some javascript code and trans-coded it to c#. I only have 1 error left, the one stated in the title. No matter what I search nothing I have tried fixes it. The line that is giving the error is line 18. Any help is much appreciated.

using UnityEngine;
using System.Collections;

public class food : MonoBehaviour {

	void  Start () {

		}

	void  Update () {

		}    

	void  OnCollisionEnter (Collider other) {
    	StartCoroutine(LerpScale(2.0f));
    	}
     
    void LerpScale (float time){
    	var originalScale = transform.localScale;
    	var targetScale = originalScale - Vector3(1.0f, 0.0f, 1.0f);
   		var originalTime = time;
     
    while (time > 0.0f) {
    
		time -= Time.deltaTime;
     	transform.localScale = Vector3.Lerp(targetScale, originalScale, time / originalTime);
     
    yield return 0;
    }
    }
}
2

You can’t yield in that function as your return type is void. Switch it to IEnumerator.

3

That fixed that. But now I have 3 more errors. ^.^ Thanks for getting me past that though.
edit: Fixed 'em. All is good now.