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', '02848c36df7370f140035852957a7e7b', '216.73.216.108', '1763365121', '1763365121', '/shop_content.php/coID/25')

[XT SQL Error]