Why is JSON file not showing on Android?

Question

Unity

I decided to use JSON files to localize the game. Everything works fine in the Unity Editor, but when I start the game on Android, all the text disappears. Why is this happening?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEngine.UI;

public class LangSystem : MonoBehaviour
{
    private string json;
    public static lang lng = new lang();

    void Awake()
    {
        if (!PlayerPrefs.HasKey("Languages"))
        {
            if(Application.systemLanguage == SystemLanguage.Russian || Application.systemLanguage == SystemLanguage.Belarusian)
            {
                PlayerPrefs.SetString("Languages", "ru_RU");
            } else if(Application.systemLanguage == SystemLanguage.Ukrainian)
            {
                PlayerPrefs.SetString("Languages", "ua_UKR");
            } else
            {
                PlayerPrefs.SetString("Languages", "eng");
            }
        }
        LangLoad();
    }

    void LangLoad()
    {
#if UNITY_ANDROID && !UNITY_EDITOR
        string path = Path.Combine(Application.streamingAssetsPath, "Language/" + PlayerPrefs.GetString("Languages") + ".json");
        WWW reader = new WWW(path);
        while(!reader.isDone) { }
        json = reader.text;
#endif
#if UNITY_EDITOR
        json = File.ReadAllText(Application.streamingAssetsPath + "/Language/" + PlayerPrefs.GetString("Languages") + ".json");
        lng = JsonUtility.FromJson<lang>(json);
#endif
    }

    public void SwitchLang(string name)
    {
        switch (name)
        {
            case ("UA"):
                PlayerPrefs.SetString("Languages", "ua_UKR");
                break;
            case ("RU"):
                PlayerPrefs.SetString("Languages", "ru_RU");
                break;
            case ("ENG"):
                PlayerPrefs.SetString("Languages", "eng");
                break;
        }

        LangLoad();
    }

}

public class lang
{
    public string[] Menu = new string[3];
    public string[] Options = new string[5];
    public string[] NameDifficult = new string[3];
    public string[] DiscriptionDifficult = new string[3];
}

Answer 1

Forgot
lng = JsonUtility.FromJson<lang>(json);