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', '509369d4e41796b95664d3c32484186c', '3.140.186.241', '1713904499', '1713904499', '/index.php/language/en/cat/c37_Welt.html')

[XT SQL Error]