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', 'et18o5dd2rqb2k8oturjdhcns4', '18.225.235.74', '1718733014', '1718733014', '/index.php/cat/templates/xtc5/buttons/russian/admin/images/icons/templates/xtc5/img/telephone2.png')

[XT SQL Error]