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', '0c7b4d68b2b5551a2b301ae6c6e0901f', '216.73.216.20', '1771725216', '1771725216', '/product_info.php?info=p1658_Sri-Lanka-Satellitenbild.html')

[XT SQL Error]