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', '55c55306ee0e749494de15f9104a5ef9', '100.26.196.222', '1709184444', '1709184444', '/shop/index.php')

[XT SQL Error]