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', 'ba4b64496f7d5a33a6caf606745268bb', '216.73.216.108', '1763456961', '1763456961', '/index.php/cat/c38_Karten-Konfigurator.html')

[XT SQL Error]