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', '507824887b283845661e6c3306b9e03e', '216.73.216.121', '1771448473', '1771448473', '/')

[XT SQL Error]