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', 'ce24ccf3d482118df387f01561000daf', '18.191.5.239', '1714154328', '1714154328', '/index.php/language/de/refID/1/cat/c19_Reliefkarten-Digital.html')

[XT SQL Error]