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', '8f2f0e84d69b9d1a591cd2fbfc9bd4c1', '216.73.216.116', '1752388681', '1752388681', '/product_info.php/language/en/info/p1576_Cameroon-Satellite-Image.html')

[XT SQL Error]