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', '7fa1c33f56d8b0a46a31b8eb2c8de1e5', '216.73.216.3', '1767300431', '1767300431', '/product_info.php?info=p3461_Jordan-Reliefkarte.html')

[XT SQL Error]