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', '6d1720f35fe05770740ba4c315dfadfd', '54.221.159.188', '1710827715', '1710827715', '/shop_content.php/coID/7/content/Contact')

[XT SQL Error]