A PHP Error was encountered

Severity: Notice

Message: Undefined variable: username

Filename: controllers/User.php

Line Number: 37

Backtrace:

File: /home/ksinfo/public_html/outer-app/sms/application/controllers/User.php
Line: 37
Function: _error_handler

File: /home/ksinfo/public_html/outer-app/sms/index.php
Line: 315
Function: require_once