A PHP Error was encountered

Severity: Warning

Message: Undefined array key "user_id"

Filename: pages/product-page.php

Line Number: 735

Backtrace:

File: /var/www/ee77d4b4-86c6-409f-9263-4706a753156b/public_html/application/views/front-end/classic/pages/product-page.php
Line: 735
Function: _error_handler

File: /var/www/ee77d4b4-86c6-409f-9263-4706a753156b/public_html/application/views/front-end/classic/template.php
Line: 75
Function: view

File: /var/www/ee77d4b4-86c6-409f-9263-4706a753156b/public_html/application/controllers/Products.php
Line: 566
Function: view

File: /var/www/ee77d4b4-86c6-409f-9263-4706a753156b/public_html/index.php
Line: 315
Function: require_once