1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '013c0e9bffc0c686077f062ce695602d', '18.204.56.185', '1659974383', '1659974383', '/index.php?refID=1')

[XT SQL Error]