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', 'b348f9534aca7f6f960d1bbf13cc5f8b', '18.117.70.132', '1713575678', '1713575678', '/product_info.php?language=de&info=p247_Nessun-Dorma.html&XTCsid=9ed062a1d997e94e67f071e9bc3ac71b')

[XT SQL Error]