about errorViewPath

[jinmarcus]

application/Config/App.php

Modifying the variable $errorViewPath does not work
Modification becomes: public $errorViewPath = APPPATH.'Views/common/errors';

Display error:

Warning: Uncaught ErrorException: require(D:\project\application\Views/errors/html/error_404.php): failed to open stream: No such file or directory in D:\project\system\CodeIgniter.php:802 Stack trace: #0 D:\project\system\CodeIgniter.php(802):

about system\CodeIgniter.php
I found this in the document, and There is no $errorViewPath variable：

if (is_cli())
		{
			require APPPATH . 'Views/errors/cli/error_404.php';
		}
		else
		{
			require APPPATH . 'Views/errors/html/error_404.php';
		}