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', 'bm8e1p5tmcb3cc94g8d8i8k0l7', '3.144.91.201', '1746787183', '1746787183', '/product_info.php?info=p583_805265-Schneeschieberblatt-46-cm.html')

[XT SQL Error]