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', '26c9c00e9eef0b5e674da8f910659faa', '216.73.216.116', '1752276986', '1752276986', '/popup_content.php/coID/1')

[XT SQL Error]