There is no renderer attached to the game object

using System.Collections; using System.Collections.Generic; using UnityEngine;

public class ObjectColor : MonoBehaviour { public Color changedColor = Color.white; public Color originalColor = Color.white;

 void Awake()
 {
     originalColor = this.GetComponent<Renderer>().material.color;
 }

 void Update ()
 {
     if (Input.GetKeyDown (KeyCode.G)) {
         this.GetComponent<Renderer>().material.color = changedColor;
     }
         else if (Input.GetKeyUp (KeyCode.G)) 
     {
         this.GetComponent<Renderer>().material.color = originalColor;
     }
 }

}

Create a prefab and assign it and ensure to apply the changes + save scene so the prefab changes really take place

if you instantiate only a mesh you have to provide the full game object with all components too, a prefab takes care of that for you

I created a mesh renderer for the prefab and it fixed the problem

I met same problem too. I attached a "mesh renderer" to the "prefab". but, I couldn't fix. how did you do another?

I had xxxxing mistake I attached non-related gameobject.. I resolved.