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', 'd6fd9b1e9a52d6b4ef7fcc843e81c4be', '18.221.85.33', '1714175783', '1714175783', '/index.php/language/en/cat/c38_Map-Konfigurator.html')

[XT SQL Error]