Save data not creating save file

Question

I've done a save system before, and I didn't change anything about the system but it's not working. So here is my save script and it just creates a file and opens it when you want to load it. It keeps saying file not found and I'm getting a NullReferenceException

 using System.IO;
 using System.Runtime.Serialization.Formatters.Binary;
 using UnityEngine;
 using System.Runtime.CompilerServices;
 
 public static class SaveScript
 {
     public static void SaveStats(PlayerControls controls)
     {
         BinaryFormatter formatter = new BinaryFormatter();
         string path = Application.persistentDataPath + "/targetBlast.GameData";
         FileStream stream = new FileStream(path, FileMode.Create);
 
         PlayerData data = new PlayerData(controls);
 
         formatter.Serialize(stream, data);
         stream.Close();
     }
 
     public static PlayerData LoadStats()
     {
         string path = Application.persistentDataPath + "/targetBlast.GameData";
 
         if (File.Exists(path))
         {
             Debug.Log("File found" + 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.Log("File not found" + path);
             return null;
         }
     }
 }

This is my main script where the variables that I'm saving are. I keep getting a NullReferenceException error saying Object reference not set to the instance of an object and I'm getting an error because of the variable "allPoints" for some reason.

 public void SaveGame()
 {
     SaveScript.SaveStats(this);
 }

 public void LoadGame()
 {
     PlayerData data = SaveScript.LoadStats();

     this.allPoints = data.allPoints;
 }

Here is my last script where I store the player's data

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 [System.Serializable]
 public class PlayerData
 {
     public int allPoints;
 
     public bool levelUnlockedZero;
     public bool levelUnlockedOne;
     public bool levelUnlockedTwo;
     public bool levelUnlockedThree;
     public bool levelUnlockedFour;
     public bool levelUnlockedFive;
     public bool levelUnlockedSix;
     public bool levelUnlockedSeven;
 
     public bool hasAbilityZero;
     public bool hasAbilityOne;
     public bool hasAbilityTwo;
     public bool hasAbilityThree;
     public bool hasAbilityFour;
     public bool hasAbilityFive;
     public bool hasAbilitySix;
     public bool hasAbilitySeven;
 
     public PlayerData (PlayerControls controls)
     {
         allPoints = controls.allPoints;
 
         levelUnlockedZero = controls.levelUnlocked[0];
         levelUnlockedOne = controls.levelUnlocked[1];
         levelUnlockedTwo = controls.levelUnlocked[2];
         levelUnlockedThree = controls.levelUnlocked[3];
         levelUnlockedFour = controls.levelUnlocked[4];
         levelUnlockedFive = controls.levelUnlocked[5];
         levelUnlockedSix = controls.levelUnlocked[6];
         levelUnlockedSeven = controls.levelUnlocked[7];
 
         hasAbilityZero = controls.hasAbility[0];
         hasAbilityOne = controls.hasAbility[1];
         hasAbilityTwo = controls.hasAbility[2];
         hasAbilityThree = controls.hasAbility[3];
         hasAbilityFour = controls.hasAbility[4];
         hasAbilityFive = controls.hasAbility[5];
         hasAbilitySix = controls.hasAbility[6];
         hasAbilitySeven = controls.hasAbility[7];
     }
 }

Answer 1

I don't know the answer, but I've already a working SaveManager, maybe it helps you:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using System.IO;
 using System.Xml;
 using System.Xml.Serialization;
 
 
 public class SaveManager : MonoBehaviour
 {
     
     public bool load = true;
     public bool save = false;
 
 
 
     public SaveData activeSave;
 
    
     
     void Awake() 
     {
         Debug.Log(Application.persistentDataPath);
         if(save){Save();}
         if(load){Load();}
     }
    
 
     void Update()
     {
         if(Input.GetKeyDown(KeyCode.S))
         {
             Save();
         }
 
         if(Input.GetKeyDown(KeyCode.L))
         {
             Load();
         }
     }
 
     public void Save()
     {
         //print("saving");
         string dataPath = Application.persistentDataPath;
         //print(dataPath);
         
 
         XmlSerializer serializer = new XmlSerializer(typeof(SaveData));
         FileStream stream = new FileStream(dataPath + "/" + activeSave.saveName + ".xml", FileMode.Create);
         //print(stream);
         serializer.Serialize(stream, activeSave);
         stream.Close();
 
         //print("saved");
     }
 
     
 
     public void Load() 
     {
         print("loading");
         string dataPath = Application.persistentDataPath;
         //print(dataPath);
 
         if(System.IO.File.Exists(dataPath + "/" + activeSave.saveName + ".xml"))
         {
             print("exsits");
             var serializer = new XmlSerializer(typeof(SaveData));
             var stream = new FileStream(dataPath + "/" + activeSave.saveName + ".xml", FileMode.Open);
             //print(stream);
             activeSave = serializer.Deserialize(stream) as SaveData;
             //print(activeSave);
             stream.Close();
 
 
             
             
             
             
             
             print("loaded");
         }
     }
  /*
     //Load xml file
     public void Load()
     {
         string dataPath = Application.persistentDataPath;
         XmlSerializer serializer = new XmlSerializer(typeof(SaveData));            //Create serializer
         FileStream stream = new FileStream(dataPath, FileMode.Open); //Load file at this path
         activeSave = serializer.Deserialize(stream) as SaveData;
         stream.Close();//Close the stream
     }
 */
 
     public void LoadData()
     {
         string dataPath = Application.persistentDataPath;
         if (File.Exists(dataPath + "/" + activeSave.saveName + ".xml"))
         {
             //var serializer = new XmlSerializer(typeof(SaveData));
             //var stream = new FileStream(dataPath + "/" + activeSave.saveName + ".save", FileMode.Create);
             
             //activeSave = serializer.Deserialize(stream) as SaveData;
             string filePath2 = dataPath + "/" + activeSave.saveName + ".xml";
 
             //string fileText = File.ReadAllText(filePath);
             XmlSerializer serializer = new XmlSerializer(typeof(SaveData));
             using (StringReader reader = new StringReader(filePath2))
             {
                 //return (SaveData)(serializer.Deserialize(reader)) as SaveData;
                 activeSave = (SaveData)(serializer.Deserialize(reader)) as SaveData;
                 print("loaded");
             }
         }
         
     }
 
 }
 
 [System.Serializable]
 public class SaveData
 {
     public string saveName;
 
     public int age;
     public int mass;
     public int size;
     public int fitLevel;
     public bool tone;
     public bool softAP;
     public bool firstStart = true;
     public List<float> ListGraph1;
     public List<float> ListGraph2;
     public List<float> ListGraph3;
 }

Save data not creating save file

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