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', '995567ebb1370c4781f64f1d33c3b252', '18.117.138.44', '1713614598', '1713614598', '/index.php/language/de/cat/c30_Countries.html/page/9')

[XT SQL Error]