this is the error

A PHP Error was encountered
Severity: 8192

Message: ctype_digit(): Argument of type null will be interpreted as string in the future

Filename: libraries/Pagination.php

Line Number: 526

Backtrace:

File: C:xampphtdocsci_paginationapplicationcontrollerscountry.php
Line: 25
Function: create_links

File: C:xampphtdocsci_paginationindex.php
Line: 315
Function: require_once

controller
country.php

load->library(‘pagination’);
$this->load->database();
$this->load->model(‘country_model’);
}

public function index() {
$config = array();
$config[“base_url”] = site_url(“country/index”);
$config[“total_rows”] = $this->country_model->record_count();
$config[“per_page”] = 3;
$config[“uri_segment”] = 3;

$this->pagination->initialize($config);

$page = ($this->uri->segment(3)) ? $this->uri->segment(3) : 0;
$data[“countries”] = $this->country_model->fetch_countries($config[“per_page”], $page);
$data[“links”] = $this->pagination->create_links();

$this->load->view(‘country_list’, $data);
}
}