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', 'bf1d74053941f992cca9f7563326d6b6', '44.193.77.196', '1711696797', '1711696797', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=9905f496dafd7c1604ee1758883b5a9f')

[XT SQL Error]