A PHP Error was encountered

Severity: 8192

Message: str_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated

Filename: controllers/ShoppingCartPage.php

Line Number: 21

Backtrace:

File: /home/u219273523/domains/devproedge.net/public_html/ecommerce/application/controllers/ShoppingCartPage.php
Line: 21
Function: str_replace

File: /home/u219273523/domains/devproedge.net/public_html/ecommerce/index.php
Line: 292
Function: require_once