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', '33fcf966511af6d70d7c0965a8918990', '18.116.36.192', '1713564209', '1713564209', '/product_info.php?info=p41_Schoener-Abend--Polka-.html&XTCsid=fbf10991e93a5b1cee6d3cdc21485899')

[XT SQL Error]