A PHP Error was encountered

Severity: Warning

Message: Trying to access array offset on value of type null

Filename: frontend/header.php

Line Number: 8

Backtrace:

File: /home/dermatologyconfe/public_html/application/views/frontend/header.php
Line: 8
Function: _error_handler

File: /home/dermatologyconfe/public_html/application/views/frontend/conference-dates.php
Line: 12
Function: view

File: /home/dermatologyconfe/public_html/application/controllers/frontend/Important_dates.php
Line: 53
Function: view

File: /home/dermatologyconfe/public_html/index.php
Line: 315
Function: require_once