A PHP Error was encountered

Severity: Notice

Message: Undefined index: link_referral

Filename: controllers/Daftar.php

Line Number: 41

Backtrace:

File: /home/u1004042/public_html/app/application/controllers/Daftar.php
Line: 41
Function: _error_handler

File: /home/u1004042/public_html/app/index.php
Line: 315
Function: require_once