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', 'c6kpffh6jfiggppr31l1oquq13', '3.12.146.111', '1722064424', '1722064424', '/index.php')

[XT SQL Error]