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', 'a9c1f66072f640eeb8ba44b32c71c617', '3.239.208.72', '1711691154', '1711691154', '/product_info.php/language/de/info/p1594_Greece-Satellite-Image.html')

[XT SQL Error]