1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', 'n0gb4jmnq72702mq2k5p7qmr24', '216.73.216.200', '1752883218', '1752883218', '/shop_content.php/coID/70')

[XT SQL Error]