A PHP Error was encountered

Severity: Notice

Message: Undefined variable: agent

Filename: models/Main_model.php

Line Number: 688

Backtrace:

File: /home/dentmenderes/public_html/application/models/Main_model.php
Line: 688
Function: _error_handler

File: /home/dentmenderes/public_html/application/core/MY_Controller.php
Line: 141
Function: counter

File: /home/dentmenderes/public_html/application/core/MY_Controller.php
Line: 22
Function: app_counter

File: /home/dentmenderes/public_html/application/controllers/Main.php
Line: 19
Function: __construct

File: /home/dentmenderes/public_html/index.php
Line: 317
Function: require_once