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', 'f8eff1a9761b3568efb927bfc8834662', '3.144.113.197', '1714001341', '1714001341', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=41f283276f02c57a558016baf9b157ec')

[XT SQL Error]