1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', 'mk5b0kt2sueuerjllct0i5gof5', '3.22.70.137', '1722050676', '1722050676', '/shop_content.php?coID=3')

[XT SQL Error]