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', '2k7qphk2q34ne6p5dv04kga171', '18.117.151.179', '1746994412', '1746994412', '/product_info.php?info=p605_804121-Sternfraese--Rollhacke--Kultivator.html')

[XT SQL Error]