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', '1f491b01ced806e5e9bee5433adb442d', '18.117.183.172', '1713570791', '1713570791', '/account.php?XTCsid=30c973abda9994cdcaa402f38a62d49a')

[XT SQL Error]