1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '5128bd06a18c016ed7136abdd03f0773', '216.73.216.44', '1768707026', '1768707026', '/shop_content.php/language/en/coID/4')

[XT SQL Error]