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', 'da8559c195cff91020b7a35e5c74b88c', '3.138.122.4', '1714038926', '1714038926', '/product_info.php?info=p53_Fruehling-an-der-Donau--Walzer-.html&XTCsid=7449276e387898a36bd6271988bac6c7')

[XT SQL Error]