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', '9424c135067dc0fb4133ab89f19391d2', '3.140.186.241', '1715197598', '1715197598', '/product_info.php?language=en&info=p247_Nessun-Dorma.html&XTCsid=887fff7384999e8c958f14224ebe6b7c')

[XT SQL Error]