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', 'a841ab25d27db6d7d2a2acd3c923c33d', '18.223.106.232', '1713525062', '1713525062', '/product_info.php?info=p247_Nessun-Dorma.html&XTCsid=3cd37329143049d8f2fab7a46749bac8')

[XT SQL Error]