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', '8n83oo9on67dltk624kqjckeg6', '3.137.41.236', '1718729367', '1718729367', '/index.php/cat/admin/images/icons/admin/images/icons/images/product_images/thumbnail_images')

[XT SQL Error]