在HMVC中，如何从另一个模块加载模型？

on the server I can not load a model that is in another module in the HMVC, framework of the Codeigniter framework, I tried this way:

Class Contract extends MY_Controller
{
    public function __construct()
    {
        parent::__construct();
        $this->load->model('Contract_model', 'contract');
        $this->load->model('register/customer_model', 'customer');
        $this->load->model('register/daydue_model', 'due');
    }
}

Structure

In the localhost works quietly, since the server is giving this error::

Message: Unable to locate the model you have specified: Daydue_model

When you uploading on server use casesensitive it does not create problem on localhost. your model name is incorrect.

Do it like this

$this->load->model('register/daydue_model', 'due');

And rename your model name to Daydue_model and check the class name same is the name of model like:

class Daydue_model extends CI_Model