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', '155728a7e262083336a741ddcf1d5d90', '216.73.216.91', '1763698716', '1763698716', '/product_info.php?info=p1603_Ecuador-Satellitenbild.html')

[XT SQL Error]