A PHP Error was encountered

Severity: Warning

Message: Undefined array key "user_id"

Filename: pages/product-page.php

Line Number: 679

Backtrace:

File: /home/u303265624/domains/buytech.app/public_html/application/views/front-end/classic/pages/product-page.php
Line: 679
Function: _error_handler

File: /home/u303265624/domains/buytech.app/public_html/application/views/front-end/classic/template.php
Line: 74
Function: view

File: /home/u303265624/domains/buytech.app/public_html/application/controllers/Products.php
Line: 548
Function: view

File: /home/u303265624/domains/buytech.app/public_html/index.php
Line: 315
Function: require_once