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', 'cc68ea428149c67282ce9e66695e414c', '3.138.199.50', '1715142927', '1715142927', '/product_info.php?info=p41_Schoener-Abend--Polka-.html&XTCsid=f14882bc03b87e844afdf80aaa54462a')

[XT SQL Error]