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', '8a15d70c70c336070dc6ec53c09ea044', '3.128.203.143', '1713490228', '1713490228', '/index.php/language/de/cat/c40_Map-Konfigurator.html')

[XT SQL Error]