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', '9f03cce0e4c1178d1ab049f881a834e1', '3.133.141.6', '1713618626', '1713618626', '/product_info.php?info=p41_Schoener-Abend--Polka-.html&XTCsid=7593f4da55114442760e17ad10225a85')

[XT SQL Error]