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', 'a47ba77aabf7270841076f4c0d279477', '216.73.216.3', '1766319047', '1766319047', '/products_new.php/language/en')

[XT SQL Error]