can you read json file on android ? I have a thesis and it's not going well.

I have these codes for my item database, it works on pc, but doesn't work on my android phone

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using LitJson;
 using System.IO;
 
 
 public class ItemDatabase : MonoBehaviour
 {
     private List<Weapon> WeaponDatabase = new List<Weapon>();
     private List<Armor> ArmorDatabase = new List<Armor>();
     private List<Potion> PotionDatabase = new List<Potion>();
     private JsonData WeaponData, ArmorData, PotionData;
 
 
     void Start()
     {
         WeaponData = JsonMapper.ToObject(File.ReadAllText(Application.dataPath + "/Scripts/Weapons.json"));
         ArmorData = JsonMapper.ToObject(File.ReadAllText(Application.dataPath + "/Scripts/Armors.json"));
         PotionData = JsonMapper.ToObject(File.ReadAllText(Application.dataPath + "/Scripts/Potions.json"));
 
         ConstructItemDatabase();
 
     }
 
     public Weapon FetchWeaponbyID(int id)
     {
         for (int i = 0; i < WeaponDatabase.Count; i++)
         {
             if (WeaponDatabase[i].ID == id)
             {
                 return WeaponDatabase[i];
             }
         }
         return null;
     }
 
     public Armor FetchArmorbyID(int id)
     {
         for (int i = 0; i < ArmorDatabase.Count; i++)
         {
             if (ArmorDatabase[i].ID == id)
             {
                 return ArmorDatabase[i];
             }
         }
         return null;
     }
 
     public Potion FetchPotionbyID(int id)
     {
         for (int i = 0; i < PotionDatabase.Count; i++)
         {
             if (PotionDatabase[i].ID == id)
             {
                 return PotionDatabase[i];
             }
         }
         return null;
     }
 
 
     void ConstructItemDatabase()
     {
         for (int x = 0; x < WeaponData.Count; x++)
         {
             WeaponDatabase.Add(new Weapon((int)WeaponData[x]["ID"], WeaponData[x]["ItemName"].ToString(),
                 (int)WeaponData[x]["Damage"], (bool)WeaponData[x]["Stackable"], (bool)WeaponData[x]["Equipable"],
                 WeaponData[x]["Slug"].ToString(), WeaponData[x]["Description"].ToString()));
         }
 
         for (int x = 0; x < ArmorData.Count; x++)
         {
             ArmorDatabase.Add(new Armor((int)ArmorData[x]["ID"], ArmorData[x]["ItemName"].ToString(),
                 (int)ArmorData[x]["MaxHealth"], (bool)ArmorData[x]["Stackable"], (bool)ArmorData[x]["Equipable"],
                 ArmorData[x]["Slug"].ToString(), ArmorData[x]["Description"].ToString()));
         }
 
         for (int x = 0; x < PotionData.Count; x++)
         {
             PotionDatabase.Add(new Potion((int)PotionData[x]["ID"], PotionData[x]["ItemName"].ToString(),
                 (int)PotionData[x]["HealAmount"], (bool)PotionData[x]["Stackable"], (bool)PotionData[x]["Equipable"],
                 PotionData[x]["Slug"].ToString(), PotionData[x]["Description"].ToString()));
         }
 }
 
 public class Weapon
 {
     public int ID { get; set; }
     public string ItemName { get; set; }
     public int Damage { get; set; }
     public bool Stackable { get; set; }
     public bool Equipable { get; set; }
     public string Description { get; set; }
     public string Slug { get; set; }
     public Sprite Sprite { get; set; }
 
 
     public Weapon(int _id, string _itemName, int _damage, bool _stackable, bool _equipable, string _slug, string _description)
     {
         this.ID = _id;
         this.ItemName = _itemName;
         this.Stackable = _stackable;
         this.Equipable = _equipable;
         this.Damage = _damage;
         this.Slug = _slug;
         this.Description = _description;
         this.Sprite = Resources.Load<Sprite>("Sprites/Weapons/" + this.Slug);
     }
 
 
 
     public Weapon()
     {
         this.ID = -1;
     }
 
 
 }
 
 public class Armor
 {
     public int ID { get; set; }
     public string ItemName { get; set; }
     public int MaxHealth { get; set; }
     public bool Stackable { get; set; }
     public bool Equipable { get; set; }
     public string Description { get; set; }
     public string Slug { get; set; }
     public Sprite Sprite { get; set; }
 
 
     public Armor(int _id, string _itemName, int _maxhealth, bool _stackable, bool _equipable, string _slug, string _description)
     {
         this.ID = _id;
         this.ItemName = _itemName;
         this.Stackable = _stackable;
         this.Equipable = _equipable;
         this.MaxHealth = _maxhealth;
         this.Slug = _slug;
         this.Description = _description;
         this.Sprite = Resources.Load<Sprite>("Sprites/Armors/" + this.Slug);
     }
 
 
 
     public Armor()
     {
         this.ID = -1;
     }
 
 
 }
 
 public class Potion
 {
     public int ID { get; set; }
     public string ItemName { get; set; }
     public bool Stackable { get; set; }
     public bool Equipable { get; set; }
     public string Description { get; set; }
     public string Slug { get; set; }
     public int HealAmount { get; set; }
     public Sprite Sprite { get; set; }
 
 
     public Potion(int _id, string _itemName, int _healamount, bool _stackable, bool _equipable, string _slug, string _description)
     {
         this.ID = _id;
         this.ItemName = _itemName;
         this.Stackable = _stackable;
         this.Equipable = _equipable;
         this.HealAmount = _healamount;
         this.Slug = _slug;
         this.Description = _description;
         this.Sprite = Resources.Load<Sprite>("Sprites/Potions/" + this.Slug);
     }
 
     public Potion()
     {
         this.ID = -1;
     }
 
 
 }

 
 
 

How can I make it better, please, I need an answer. please help me. the images for the items in the inventory are showing correctly on my pc, but for android its null.