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', '1790572d5b92efb8f166ca12a47fa43e', '3.239.76.211', '1726203360', '1726203360', '/shop/index.php')

[XT SQL Error]