A PHP Error was encountered

Severity: Notice

Message: Undefined offset: 0

Filename: models/Project_model.php

Line Number: 80

Backtrace:

File: /home/portfolio/public_html/application/models/Project_model.php
Line: 80
Function: _error_handler

File: /home/portfolio/public_html/application/helpers/utility_helper.php
Line: 131
Function: get_sem_info

File: /home/portfolio/public_html/application/views/includes/header.php
Line: 9
Function: semester_info

File: /home/portfolio/public_html/application/controllers/Units.php
Line: 59
Function: view

File: /home/portfolio/public_html/index.php
Line: 321
Function: require_once