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', 'b4f22879d6552c0ba60c2f2655d6d974', '34.231.247.88', '1653613059', '1653613059', '/shop_content.php/language/en/coID/7/content/Kontakt')

[XT SQL Error]