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', '5a27c241e0845f462165baac18a2d97c', '3.227.240.72', '1713391424', '1713391424', '/shop/index.php')

[XT SQL Error]