1366 - Incorrect integer value: '' for column `schablone_1`.`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', '3fe7cb12ab202bc0faf14752b5e3d79a', '3.227.251.94', '1686419981', '1686419981', '/shop/index.php')

[XT SQL Error]