A PHP Error was encountered

Severity: Notice

Message: Undefined index: HTTP_REFERER

Filename: api/Account.php

Line Number: 70

Backtrace:

File: /opt/lampp/htdocs/secretary_pool/home/application/controllers/api/Account.php
Line: 70
Function: _error_handler

File: /opt/lampp/htdocs/secretary_pool/home/index.php
Line: 315
Function: require_once