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', '33a3ccpi41iqfdskvcth3nbk56', '18.191.178.51', '1718725786', '1718725786', '/index.php/cat/admin/images/icons/admin/images/icons/images/product_images/thumbnail_images')

[XT SQL Error]