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', '0fb1737cd2403fd4fbbf09f132c158bb', '3.235.65.220', '1664481201', '1664481201', '/shop_content.php/language/de/coID/7/content/Kontakt')

[XT SQL Error]