A PHP Error was encountered

Severity: Notice

Message: Undefined index: user_id_login

Filename: controllers/Index.php

Line Number: 158

Backtrace:

File: /home/unitop/public_html/application/modules/course/controllers/Index.php
Line: 158
Function: _error_handler

File: /home/unitop/public_html/index.php
Line: 296
Function: require_once

A PHP Error was encountered

Severity: Notice

Message: Undefined index: user_id_login

Filename: controllers/Index.php

Line Number: 180

Backtrace:

File: /home/unitop/public_html/application/modules/course/controllers/Index.php
Line: 180
Function: _error_handler

File: /home/unitop/public_html/index.php
Line: 296
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Cannot modify header information - headers already sent by (output started at /home/unitop/public_html/system/core/Exceptions.php:272)

Filename: helpers/url_helper.php

Line Number: 564

Backtrace:

File: /home/unitop/public_html/application/modules/course/controllers/Index.php
Line: 349
Function: redirect

File: /home/unitop/public_html/index.php
Line: 296
Function: require_once