1366 - Incorrect integer value: '' for column `shop_db3`.`whos_online`.`customer_id` at row 1

insert into whos_online (customer_id, full_name, session_id, ip_address, time_entry, time_last_click, last_page_url) values ('', 'Guest', '02c7cd0ac0748b31d6f939fec5ff96ec', '3.147.89.85', '1713588643', '1713588643', '/product_info.php?info=p248_Memory-Of-Spain.html&XTCsid=8431cc383ca4da55e69d814d1f9a8725')

[XT SQL Error]