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', '9a941db6ea54d37dea83f21bd884c4d3', '216.73.216.3', '1767585092', '1767585092', '/product_info.php?info=p1536_Tuerkei-Satellitenbild.html')

[XT SQL Error]