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', '6463ff80d5130ad0073ab4154866d15f', '3.149.214.32', '1713905639', '1713905639', '/product_info.php?info=p298_Bei-uns-in-Bayern.html&XTCsid=a33edcfe7a4d0f8d478a4ad1978f2859')

[XT SQL Error]