1366 - Incorrect integer value: '' for column `db110607`.`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', '5ou1gg68evbsibjbicic1821n4', '18.208.187.128', '1664561694', '1664561694', '/index.php')

[XT SQL Error]