1366 - Incorrect integer value: '' for column `usr_web74_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', 'egp6c7v7htqa2cans3maf0a5c7', '3.144.104.136', '1746779259', '1746779259', '/checkout_shipping.php')

[XT SQL Error]