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', 'bs20s1r06s47q1n2mgidsofab1', '18.190.217.213', '1718727451', '1718727451', '/index.php/cat/templates/xtc5/admin/images/icons/templates/xtc5/img/telephone2.png')

[XT SQL Error]