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', '3990c7fe2ced5527d0811ba164300329', '3.21.106.69', '1714167200', '1714167200', '/redirect.php?action=product&id=247&XTCsid=1ac6c2897c9e1517fbc2b6cff40eabd3')

[XT SQL Error]