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', 'f41c0f78737a7c31e5c8f3f9c0224f49', '18.221.112.220', '1714173575', '1714173575', '/advanced_search.php?XTCsid=12ab6c593489deceb1c19806497af77d')

[XT SQL Error]