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', 'ef5e75a0f67b6a041a7ea7f0b59c598a', '3.135.190.101', '1714125688', '1714125688', '/popup_content.php?coID=1&XTCsid=2c82651c29181c0e0b67329d45f74355')

[XT SQL Error]