1366 - Incorrect integer value: '' for column `abtecsho_shop`.`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', '2bfsgsvsnc9mtgaj2dn3eoc7c7', '216.73.216.143', '1769859414', '1769859414', '/product_info.php/info/p7003_ISO-7010-E-008-KNS--Notausgangsvorrichtung.html')

[XT SQL Error]