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', '4bebe8a3ea5928d66d95c588e6e2a8da', '216.73.216.191', '1758213580', '1758213580', '/popup_content.php/coID/1')

[XT SQL Error]