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', '0a449026edd0eb35b5c08b2f52a92338', '216.73.216.124', '1763169456', '1763169456', '/index.php/cat/c30_Laender.html/page/5')

[XT SQL Error]