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', '99b7a98ed7b6809b79d06b416c3ff97e', '44.206.227.65', '1711638097', '1711638097', '/product_info.php?language=de&info=p248_Memory-Of-Spain.html&XTCsid=6f15378daa624dbfd839586482611826')

[XT SQL Error]