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', '3ce76329d8dac7c88fb810a1b8985390', '216.73.216.108', '1763310830', '1763310830', '/index.php/cat/c30_Countries.html')

[XT SQL Error]