An uncaught Exception was encountered

An uncaught Exception was encountered

Type: Error

Message: Call to a member function get() on null

Filename: D:\xampp\htdocs\banksampah\system\libraries\Cache\drivers\Cache_memcached.php

Line Number: 142

Backtrace:

File: D:\xampp\htdocs\banksampah\application\controllers\C_pengunjung.php

Line: 12

Function: get

File: D:\xampp\htdocs\banksampah\index.php

Line: 315

Function: require_once

Maaf teman-teman izin bertanya, cara mengatasi error seperti itu gimana ya masalahnya di mana teman-teman barang kali ada yang tau, Terimakasih.