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', 'dfd1ed9fe377d304dc31ccb9fa735f55', '216.73.216.8', '1757994732', '1757994732', '/product_info.php/info/p1798_Cape-Verde-8-Satellitenbild.html')

[XT SQL Error]