1366 - Incorrect integer value: '' for column `shop_db3`.`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', 'fc178236f6e2bb136514d6ddcb7b1e1d', '54.224.70.148', '1711723329', '1711723329', '/product_info.php?info=p245_Drunt-am-Bergsee.html&XTCsid=20bbdc77ade4d1698ba2b6b1a9e7f349')

[XT SQL Error]