Help. ![Smile :) :)]()
object reference not set to an instance of an object. c#

Code (CSharp):
- using UnityEngine;
- using System.Collections;
- // Attach this script to main camera
- // And Define variable underwaterLevel up
- // to your water level or sea level Y-coordinate
- public float underwaterLevel = 7;
- // These variable to store
- // The scene default fog settings
- private bool defaultFog = true;
- private Color defaultFogColor;
- private float defaultFogDensity;
- private Material...