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', 'uf5jqccsck6nsv8l3aq79gnr44', '3.137.41.236', '1718731770', '1718731770', '/index.php/cat/images/product_images/thumbnail_images/images/product_images/thumbnail_images/images')

[XT SQL Error]