A PHP Error was encountered

Severity: Notice

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

Filename: helpers/html_helper.php

Line Number: 201

Backtrace:

File: /data/www/www.yau-contest.com/application/helpers/html_helper.php
Line: 201
Function: _error_handler

File: /data/www/www.yau-contest.com/application/views/portal/aa/en/content/show_notice.php
Line: 33
Function: getenNavCats

File: /data/www/www.yau-contest.com/application/controllers/en/MathmaticsContests.php
Line: 35
Function: include

File: /data/www/www.yau-contest.com/index.php
Line: 334
Function: require_once