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', '572802faef82ea23456da8d87cd4974e', '216.73.216.108', '1763447870', '1763447870', '/product_info.php/language/de/info/p439_Reliefmap-Configurator.html')

[XT SQL Error]