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', '7552cdf0ff20068c317d06cad8d8739e', '216.73.216.148', '1755540663', '1755540663', '/product_info.php?info=p1523_Mexiko-Satellitenbild.html')

[XT SQL Error]