【CodeIgniter3】エラーページを切り替える

hooks.php

<?php
defined('BASEPATH') OR exit('No direct script access allowed');

/*
| -------------------------------------------------------------------------
| Hooks
| -------------------------------------------------------------------------
| This file lets you define "hooks" to extend CI without hacking the core
| files.  Please see the user guide for info:
|
|	https://codeigniter.com/user_guide/general/hooks.html
|
*/

$hook["post_controller_constructor"] = [
	'class'    => 'Hooks',
	'function' => 'set_error_views_path',
	'filename' => 'Hooks.php',
	'filepath' => 'hooks',
	'params'   => []
];