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', 'k6hldq5sklga0f76oe1k6ma090', '18.189.178.189', '1718726571', '1718726571', '/index.php/cat/images/product_images/thumbnail_images/admin/images/icons/images')

[XT SQL Error]