1366 - Incorrect integer value: '' for column `shop_db3`.`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', '5193b0dcf8029a262958fcc7d7da7748', '52.14.253.170', '1713616548', '1713616548', '/product_info.php?info=p320_Easy-Tunes--F-Instrumente-.html&XTCsid=7e0b503625393bfa750f9a995afb0aa8')

[XT SQL Error]