1366 - Incorrect integer value: '' for column `magickland`.`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', '56ulo98kvj8agrifr1o89tk515', '3.147.193.181', '1718728316', '1718728316', '/index.php/cat/admin/images/icons/admin/images/icons/templates/xtc5/img')

[XT SQL Error]