I'm using Xamarin Forms framework for android and iOS mobile platform, on iOS devices it work's well but in Android when going on a specific page app shut down.

I got this error : Explicit concurrent copying GC freed 7041(512KB) AllocSpace objects

Using breakpoint I noticed crash arrived executing this

var content = JsonConvert.SerializeObject(
                            newStorageUsers,
                            Formatting.None,
                            new JsonSerializerSettings()
                                ReferenceLoopHandling = ReferenceLoopHandling.Ignore
I show you entire demo code
Page in which I got error
private readonly IStorageUserService _storageService
public MyPage(User user)
   InitializeComponent();
   _storageService = new StorageUserServiceImpl();
   _storageService.StoreUser(user);
Service Interface
public interface IStorageUserService
    void StoreUser(User user);
Service Implementation
public class StorageUserServiceImpl : IStorageUserService
    private string _usersPathFile = Path.Combine(App.GetPackagePath(), "users.txt");
    public StorageUserServiceImpl()
        if (!File.Exists(_usersPathFile))
            _createUsersFile();
    private void _createUsersFile()
        var file = File.Create(_usersPathFile);
        file.Close();
    public void StoreUser(User user)
        var currentStorage = GetStorageUsers();
        List<StorageUser> newStorageUsers = new List<StorageUser>() { };
        if (currentStorage != "" && currentStorage != "[]")
            newStorageUsers = JsonConvert.DeserializeObject<List<StorageUser>>(currentStorage);
        var storageUser = new StorageUser()
            Infos = user,
            CreationDate = Helper.DateFormatter.NowDateTime()
        newStorageUsers.Add(storageUser);
        var content = JsonConvert.SerializeObject(
                            newStorageUsers,
                            Formatting.None,
                            new JsonSerializerSettings()
                                ReferenceLoopHandling = ReferenceLoopHandling.Ignore
        _store(newStorageUsers, content);
    private void _store(List<StorageUser> newStorageUser, string content)
        // breakpoint can't be triggered there because app shut down with logs
        File.WriteAllText(_usersPathFile, content);
public void StoreUser(User user)
    var currentStorage = GetStorageUsers();
    List<StorageUser> newStorageUsers = new List<StorageUser>() { };
    if (currentStorage != "" && currentStorage != "[]")
        newStorageUsers = JsonConvert.DeserializeObject<List<StorageUser>>(currentStorage);
    var storageUser = new StorageUser()
        Infos = user,
        CreationDate = Helper.DateFormatter.NowDateTime()
    newStorageUsers.Add(storageUser);
    var content = JsonConvert.SerializeObject(
                        newStorageUsers,
                        Formatting.None,
                        new JsonSerializerSettings()
                            ReferenceLoopHandling = ReferenceLoopHandling.Ignore
    _store(newStorageUsers, content);
private void _store(List<StorageUser> newStorageUser, string content)
    // breakpoint can't be triggered there because app shut down with logs
    File.WriteAllText(_usersPathFile, content);
This service is used on several pages but I got this bug in only one page
After this message on logs :
Explicit concurrent copying GC freed 7041(512KB) AllocSpace objects, 2(264KB) LOS objects, 49% free, 4343KB/8687KB, paused 187us total 28.412ms
I got
Pending exception java.lang.StackOverflowError: stack size 8192KB ...
JNI DETECTED ERROR IN APPLICATION: JNI IsInstanceOf called with pending exception java.lang.StackOverflowError: stack size 8192KB ...
Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 8815 (om.myapp.app), pid 8815
've no more details of what happened and why, how can I fix this please?
												
Yeah 'StoreUser' work's well on other page. Mainly there is view element initailization and I've another service which is initialized too :  

public UploadImagesServiceImpl(Page page)  

_page = page;  

_imagesService = new StorageUserServiceImpl();