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', '13838e3ff53218c42691659ae578bd1e', '3.14.142.115', '1714176193', '1714176193', '/shop_content.php?coID=2&XTCsid=2c82651c29181c0e0b67329d45f74355')

[XT SQL Error]