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', 'hm3btua1o6qpaiedsb2e9t8rh5', '44.192.26.60', '1665026969', '1665026969', '/')

[XT SQL Error]