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', '272ba83550bc692be0dc4e1212a038e7', '3.90.33.254', '1711674335', '1711674335', '/index.php/cat/c40_Map-Konfigurator.html')

[XT SQL Error]