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', '1cfee6e58d485e9543caefab53e9392a', '34.239.158.223', '1717017158', '1717017158', '/shop/index.php')

[XT SQL Error]