1366 - Incorrect integer value: '' for column `creatihu_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', 'b77f5d717f73d8735d575b69442b287f', '18.117.91.153', '1713490461', '1713490461', '/product_info.php?info=p321_.html')

[XT SQL Error]