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', '3f518aba396b4c1587cc9a7e0bfc302a', '44.197.251.102', '1710838960', '1710838960', '/shop_content.php/coID/23/content/Bestellablauf')

[XT SQL Error]