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', '94f1028534bd5dfeb9d2caa74535638e', '3.14.6.194', '1714029324', '1714029324', '/index.php/language/en/cat/c30_Countries.html/page/2')

[XT SQL Error]