ErrorException [ Fatal Error ]: Class 'Kohana_Cache' not found

APPPATH/common/classes/cache.php [ 3 ]

1 <?php defined('SYSPATH') or die('No direct script access.');
2 
3 abstract class Cache extends Kohana_Cache {
4 
5 
6     /**
7      * Replaces troublesome characters with underscores.
8      *

1. {
   Fatal error: Call to undefined function __() in /var/www/19218-saniyaw/data/www/board.flexi-soft.in.ua/oc/kohana/system/views/kohana/error.php on line 64