binaryformatter android save and load not working

I've tested on the editor and it works fine.But on Android doesnt work. Here's the code.

 using UnityEngine;
 using System.IO;
 using System.Runtime.Serialization.Formatters.Binary;
 
 public class SaveData
 {
     public static int playerMoney;
     public static int playerBankMoney;
     public static int playerHealth;
     public static int playerHunger;
 }
 
 
 public class SaveLoadSystem
 {
     public static void Save()
     {
         BinaryFormatter bf = new BinaryFormatter();
         string path = Path.Combine(Application.persistentDataPath, "player.bin");
         using (FileStream fs = new FileStream(path, FileMode.Create, FileAccess.Write))
         {
             bf.Serialize(fs, SaveData.playerMoney);
             bf.Serialize(fs, SaveData.playerBankMoney);
             bf.Serialize(fs, SaveData.playerHealth);
             bf.Serialize(fs, SaveData.playerHunger);

             fs.Close();          
         }
         
     }
 
     public static void Load()
     {
         if (!File.Exists("player.bin"))
             return;
 
         BinaryFormatter bf = new BinaryFormatter();
         string path = Path.Combine(Application.persistentDataPath, "player.bin");
         using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read))
         {
             SaveData.playerMoney = (int)bf.Deserialize(fs);
             SaveData.playerBankMoney = (int)bf.Deserialize(fs);
             SaveData.playerHealth = (int)bf.Deserialize(fs);
             SaveData.playerHunger = (int)bf.Deserialize(fs);

             fs.Close();
         }
     }
 }