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', 'f42474cj79gap9e69309qoeqn0', '3.142.119.111', '1718726477', '1718726477', '/index.php/cat/admin/images/product_images/templates/xtc5/thumbnail_images/1356_0.jpg')

[XT SQL Error]