1366 - Incorrect integer value: '' for column `hbl_shop`.`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', '3tvbohj11nhd5ftnkgid85f387', '18.217.19.195', '1746981664', '1746981664', '/product_info.php?info=p38_804503-Elektrische-Getreidemuehle-AMA-50.html')

[XT SQL Error]