1366 - Incorrect integer value: '' for column `hoc_db9`.`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', '4ec4c0eed7398434a631ab53cc0d5e8c', '3.238.252.196', '1659932004', '1659932004', '/')

[XT SQL Error]