private IEnumerator _GetMissions()
    {
        User currentUser = UserService.user;

        AlertsService.makeLoadingAlert("Recebendo missões");
        WWW missionsRequest = MissionsService.GetMissions(currentUser._id);

        while (!missionsRequest.isDone)
        {
            yield return(new WaitForSeconds(0.1f));
        }

        AlertsService.removeLoadingAlert();
        Debug.Log("Header: " + missionsRequest.responseHeaders["STATUS"]);
        Debug.Log("Text: " + missionsRequest.text);

        if (missionsRequest.responseHeaders["STATUS"] == HTML.HTTP_200)
        {
            MissionsService.UpdateMissions(missionsRequest.text);
            CreateMissionsCards();
        }
        else
        {
            AlertsService.makeAlert("Falha na conexão", "Tente novamente mais tarde.", "");
            yield return(new WaitForSeconds(3f));

            LoadView("Activities");
        }

        yield return(null);
    }