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', '1a697a5a8029f12cbec0c7310a61c0c6', '216.73.216.191', '1758190044', '1758190044', '/product_info.php/info/p1811_Cape-Verde-6-Satellitenbild.html')

[XT SQL Error]