1366 - Incorrect integer value: '' for column `pella-ware`.`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', '7773fdc4a2c33b9b9eefef17ca4e660b', '3.236.18.23', '1710843620', '1710843620', '/index.php')

[XT SQL Error]