A PHP Error was encountered

Severity: 8192

Message: htmlspecialchars(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/Pages.php

Line Number: 121

Backtrace:

File: /home/alkawthersteel/public_html/application/controllers/Pages.php
Line: 121
Function: htmlspecialchars

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