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', 'add69463f78da7035642284ff37122a7', '18.97.9.168', '1736931964', '1736931964', '/shop/index.php')

[XT SQL Error]