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', '903141ad81dc6ef14ec7b5a01e5e5580', '216.73.216.44', '1768672351', '1768672351', '/product_info.php/language/de/info/p3155_Germany-Relief-Map.html')

[XT SQL Error]