An uncaught Exception was encountered

Type: ArgumentCountError

Message: Too few arguments to function Welcome::add_cart(), 3 passed in /home/596952.cloudwaysapps.com/czdgbtbzcp/public_html/system/core/CodeIgniter.php on line 532 and exactly 4 expected

Filename: /home/596952.cloudwaysapps.com/czdgbtbzcp/public_html/application/controllers/Welcome.php

Line Number: 776

Backtrace:

File: /home/596952.cloudwaysapps.com/czdgbtbzcp/public_html/index.php
Line: 315
Function: require_once