Error Kcfinder pada swarakalibata_CI

Assalamualaikum Warahmatullahi Wabarakatuh...
mau nanya saya menemukan error pada ckeditor di swarakalaibata ci ini kenapa ya
Fatal error: Uncaught Error: Call to undefined function get_instance() in C:\xampp\htdocs\website\asset\kcfinder\conf\config.php:21 Stack trace: #0 C:\xampp\htdocs\website\asset\kcfinder\core\class\uploader.php(111): require() #1 C:\xampp\htdocs\website\asset\kcfinder\core\class\browser.php(23): kcfinder\uploader->__construct() #2 C:\xampp\htdocs\website\asset\kcfinder\browse.php(17): kcfinder\browser->__construct() #3 C:\xampp\htdocs\website\asset\kcfinder\index.php(3): require('C:\\xampp\\htdocs...') #4 {main} thrown in C:\xampp\htdocs\website\asset\kcfinder\conf\config.php on line 21