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', '717b533fb524aa24eeb6503739eb8789', '3.131.13.37', '1713492720', '1713492720', '/index.php/language/de/cat/c33_Satellitenbilder-Digital.html?refID=4')

[XT SQL Error]