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', '5ebc96caceaaaeb4bc29f402dbd1b05c', '3.139.72.78', '1714088667', '1714088667', '/product_info.php?language=de&info=p246_Dream-Melody.html&XTCsid=ae958f15bfdd7f280c3365e7be4f705d')

[XT SQL Error]