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', '827065fa61d57c68e517e0c263c0f37e', '216.73.216.3', '1767296954', '1767296954', '/product_info.php?info=p1549_Italien-Satellitenbild.html')

[XT SQL Error]