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', '3ep2jinpqetlh7rangdngp38g0', '18.191.132.143', '1746764197', '1746764197', '/xtshop/index.php?cat=c63_.html')

[XT SQL Error]