I have watched Brackeys Saving system video but its not working

This is for an android game. // General is the name of my script //

Here is the code:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 
 [System.Serializable]
 public class PlayerData
 {
     public int red = 0;
     public int yellow = 0;
     public int green = 0;
     public int purple = 0;
     public int black = 0;
     public int white = 0;
     public int cyan = 0;
     public int pink = 0;
     public int orange = 0;
 
     public int Money;
     public int stars = 0;
 
 
     public int Skin01 = 0;
     public int Skin02 = 0;
     public int Skin03 = 0;
     public int Skin04 = 0;
     public int Skin05 = 0;
 
 
     public PlayerData (General player)
     {
         red = player.red;
         yellow = player.yellow;
         green = player.green;
         purple = player.purple;
         black = player.black;
         white = player.white;
         cyan = player.cyan;
         pink = player.pink;
         orange = player.orange;
 
         Money = player.Money;
         stars = player.stars;
 
         Skin01 = player.Skin01;
         Skin02 = player.Skin02;
         Skin03 = player.Skin03;
         Skin04 = player.Skin04;
         Skin05 = player.Skin05;
     }
 }

second script:

 using UnityEngine;
 using System.IO;
 using System.Runtime.Serialization.Formatters.Binary;
 using System;
 
 public static class SaveSystem
 {
     public static void SavePlayer (General player)
     {
         BinaryFormatter formatter = new BinaryFormatter();
         string path = Application.persistentDataPath + "/GameSaveData.beans";
         FileStream stream = new FileStream(path, FileMode.Create);
 
         PlayerData data = new PlayerData(player);
 
         formatter.Serialize(stream, data);
         stream.Close();
     }
 
     public static PlayerData LoadPlayer()
     {
         string path = Application.persistentDataPath + "/GameSaveData.beans";
         if (File.Exists(path))
         {
             BinaryFormatter formatter = new BinaryFormatter();
             FileStream stream = new FileStream(path, FileMode.Open);
 
             PlayerData data = formatter.Deserialize(stream) as PlayerData;
             stream.Close();
 
             return data;
         } else
         {
             Debug.LogError("Save file not found in " + path);
             return null;
         }
 
     }
 
 }

my script:

 ...
 ...
     private void Awake()
     {
         LoadPlayer();
     }   
 ...
 public void SavePlayerFunc()
     {
         SaveSystem.SavePlayer(this);
     }
     public void LoadPlayer()
     {
         PlayerData data = SaveSystem.LoadPlayer();
 
         red = data.red;
         yellow = data.yellow;
         green = data.green;
         purple = data.purple;
         black = data.black;
         white = data.white;
         cyan = data.cyan;
         pink = data.pink;
         orange = data.orange;
 
 
         Skin01 = data.Skin01;
         Skin02 = data.Skin02;
         Skin03 = data.Skin03;
         Skin04 = data.Skin04;
         Skin05 = data.Skin05;
     }
 ...
     public void Continue()
     {
         ...//called by a button
         SavePlayerFunc();
     }
 ...