1366 - Incorrect integer value: '' for column `cosmeti`.`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', '942e160fb73ab9a27e64c6e15c689751', '52.15.179.139', '1715519380', '1715519380', '/xtcommerce/index.php')

[XT SQL Error]