A PHP Error was encountered

Severity: 8192

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

Filename: elegant/custom_page_viewer.php

Line Number: 19

Backtrace:

File: /var/www/vhosts/modernenglish.com.tr/httpdocs/application/views/frontend/elegant/custom_page_viewer.php
Line: 19
Function: htmlspecialchars_decode

File: /var/www/vhosts/modernenglish.com.tr/httpdocs/application/views/frontend/elegant/index.php
Line: 30
Function: include

File: /var/www/vhosts/modernenglish.com.tr/httpdocs/application/controllers/Page.php
Line: 32
Function: view

File: /var/www/vhosts/modernenglish.com.tr/httpdocs/index.php
Line: 289
Function: require_once