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', 'c642ec98e7e90ccb1afca2e22b87b0c2', '3.87.209.162', '1711628860', '1711628860', '/popup_content.php?coID=1&XTCsid=842cd293d4e43dd66c33a18be5c47b55')

[XT SQL Error]