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', 'fe9e29e11ef905e33038e60e9ece136e', '216.73.216.20', '1771725380', '1771725380', '/product_info.php?info=p3530_Solomon-Ins--2-Reliefkarte.html')

[XT SQL Error]