1366 - Incorrect integer value: '' for column `pella-ware`.`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', 'cosnv6ta6m2ikl12d38qnp7ss3', '3.231.222.84', '1711701541', '1711701541', '/login.php?XTCsid=cosnv6ta6m2ikl12d38qnp7ss3')

[XT SQL Error]