1366 - Incorrect integer value: '' for column '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', 'd8d43ec86233a386806924b4b8291b1c', '3.145.166.7', '1713992383', '1713992383', '/account_edit.php')

[XT SQL Error]