Assets\scripts\StarControler.cs(74,9): error CS0106: The modifier 'public' is not valid for this item ошибка юнити 2д

код :
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class StarControler : MonoBehaviour
{
public GameObject star1, star2, star3;
public static int open_star1, open_star2, open_star3;
void Start()
{
open_star1 = PlayerPrefs.GetInt("star1", 1);
open_star2 = PlayerPrefs.GetInt("star2", 1);
open_star3 = PlayerPrefs.GetInt("star3", 1);
}


void Update()
{
if(open_star1 == 1)
{
star1.SetActive(false);
}

if (open_star1 == 2)
{
star1.SetActive(true);
}



if (open_star2 == 1)
{
star2.SetActive(false);
}

if (open_star2 == 2)
{
star2.SetActive(true);
}



if (open_star3 == 1)
{
star3.SetActive(false);
}

if (open_star3 == 2)
{
star3.SetActive(true);
}




if(CoinText.Coin >= 1)
{
openStar1();
}

if (CoinText.Coin >= 2)
{
openStar2();
}

if (CoinText.Coin >= 3)
{
openStar3();
}



public void openStar1()
{
open_star1 = 2;
PlayerPrefs.SetInt("star1", open_star1);
}

public void openStar2()
{
open_star1 = 2;
PlayerPrefs.SetInt("star2", open_star2);
}

public void openStar3()
{
open_star1 = 2;
PlayerPrefs.SetInt("star3", open_star3);
}
}
}