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', 'd852a1455a1d344b3b3fad8b7559acf2', '3.15.221.136', '1713544556', '1713544556', '/product_info.php/language/de/info/p1734_Ist-Faeroeer--3-Satellitenbild.html')

[XT SQL Error]