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', '6e1379373ccb700583949d5afaee0d4b', '216.73.216.191', '1758174723', '1758174723', '/shop_content.php/coID/3/content/Conditions-of-Use')

[XT SQL Error]