Issues saving file in iOS

I am getting this issue when I try to save my game in iOS

 UnauthorizedAccessException: Access to the path "/var/mobile/Containers/Bundle/Application/E5970DAC-7463-4F12-A96B-1A9D524F3459/Documents" is denied.
   at GameData.CreateFile () [0x00000] in <filename unknown>:0 
   at GameData.Save (Int32 _collectibleCount, Int32 _starCount, Int32 _minutes, Boolean _isLocked) [0x00000] in <filename unknown>:0 
   at UnityEngine.Events.UnityAction.Invoke () [0x00000] in <filename unknown>:0 
   at UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0 
   at MenuItmBehavior+<WaitForAnimation>c__Iterator13.MoveNext () [0x00000] in <filename unknown>:0 
   at UnityEngine.SetupCoroutine.InvokeMoveNext (IEnumerator enumerator, IntPtr returnValueAddress) [0x00000] in <filename unknown>:0 
  
 (Filename: currently not available on il2cpp Line: -1)

I have no idea why I am getting this. Here is the code I am using to save/load my file:

 using UnityEngine;
 using System;
 using System.IO;
 using UnityEngine.SceneManagement;
 using System.Collections.Generic;
 
 public class GameData: MonoBehaviour
 {
     private static GameData _instance;
 
     public static GameData Instance
     {
         get
         {
             if (_instance == null)
             {
                 var go = new GameObject("GameData");
                 _instance = go.AddComponent<GameData>();
                 DontDestroyOnLoad(go);
             }
             return _instance;
         }
     }
 
     string _FileLocation;
     LevelCompleted _levelData;
 
     void Awake()
     {
 
 #if UNITY_IPHONE
         string fileNameBase = Application.dataPath.Substring(0, Application.dataPath.LastIndexOf('/'));
         _FileLocation = fileNameBase.Substring(0, fileNameBase.LastIndexOf('/')) + "/Documents/" + "SaveData.json";
         Debug.Log(_FileLocation);
 #elif UNITY_ANDROID
         _FileLocation = Application.persistentDataPath + "/" + ""SaveData.json""; 
 #else
         _FileLocation = Application.dataPath + "/" + "SaveData.json"; 
 #endif
 
         // we need soemthing to store the information into 
         _levelData = new LevelCompleted();
     }
 
     public void Load()
     {
         // notice how I use a reference to type (UserData) here, you need this 
         // so that the returned object is converted into the correct type 
         _levelData = LoadData();
     }    
 
     public void Save(int _collectibleCount, int _starCount, int _minutes, bool _isLocked)
     {
         var level = new Level();
 
         _levelData.Level.Add(level);
 
         level.LevelName = SceneManager.GetActiveScene().name;
         level.CollectibleCount = _collectibleCount;
         level.GoldStars = _starCount;
         level.Minutes = _minutes;
         level.NextLevelLocked = _isLocked;
         level.lastLevelPlayed++;
         // This is the final resulting JSON from the serialization process 
         CreateFile();
     }
 
     // Finally our save and load methods for the file itself 
     void CreateFile()
     {
         if (!Directory.Exists(Path.GetDirectoryName(_FileLocation)))
             Directory.CreateDirectory(Path.GetDirectoryName(_FileLocation));
 
         if (File.Exists(_FileLocation))
         {            
             File.Delete(_FileLocation);
         }
         File.WriteAllText(_FileLocation, JsonUtility.ToJson(_levelData, true));
        
         Debug.Log("File written.");
     }
 
     public LevelCompleted LoadData()
     {
         if (File.Exists(_FileLocation))
         {
             var tr = File.ReadAllText(_FileLocation);
 
             var jsonObj = JsonUtility.FromJson<LevelCompleted>(tr);
             return jsonObj;
             
         }
         return null;
     }
 }
 
 [Serializable]
 public class PlayerSkins
 {
     public string name;
     public bool unlocked;
 }
 
 [Serializable]
 public class LevelCompleted
 {
     public List<Level> Level = new List<Level>();
 }
 
 [Serializable]
 public class Level
 {
     public string LevelName;
     public int CollectibleCount;
     public int GoldStars;
     public int Minutes;
     public bool NextLevelLocked;
     public int lastLevelPlayed;
 }