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', 'fcbaf2da1983c96e803a336ffe858d66', '216.73.216.150', '1762312259', '1762312259', '/shop_content.php/coID/2')

[XT SQL Error]