1366 - Incorrect integer value: '' for column `magickland`.`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', '6nvro3f6uoucbns1ohp4kbrfn6', '3.144.123.23', '1718729116', '1718729116', '/index.php/cat/templates/xtc5/img/russian/templates')

[XT SQL Error]