A PHP Error was encountered

Severity: Notice

Message: Use of undefined constant refresh - assumed 'refresh'

Filename: models/Settings_model.php

Line Number: 25

Backtrace:

File: /var/www/html/sisuniversitario/vs2/application/models/Settings_model.php
Line: 25
Function: _error_handler

File: /var/www/html/sisuniversitario/vs2/application/controllers/Login.php
Line: 191
Function: model

File: /var/www/html/sisuniversitario/vs2/index.php
Line: 315
Function: require_once