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', '475e198dfe6c11c4d1b17843239e061b', '3.143.9.115', '1713893279', '1713893279', '/advanced_search.php?XTCsid=41d98929aac05a618616c6b9cf3dbbec')

[XT SQL Error]