A PHP Error was encountered

Severity: Warning

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

Filename: frontend/header.php

Line Number: 86

Backtrace:

File: /home/magnusgroups/public_html/catalysis-conferences.magnusgroup.org/application/views/frontend/header.php
Line: 86
Function: _error_handler

File: /home/magnusgroups/public_html/catalysis-conferences.magnusgroup.org/application/views/frontend/conference-dates.php
Line: 12
Function: view

File: /home/magnusgroups/public_html/catalysis-conferences.magnusgroup.org/application/controllers/frontend/Important_dates.php
Line: 53
Function: view

File: /home/magnusgroups/public_html/catalysis-conferences.magnusgroup.org/index.php
Line: 315
Function: require_once