1366 - Incorrect integer value: '' for column `usr_web74_1`.`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', 'dunnlm9j552o5evlad6rpot943', '52.14.137.94', '1746779616', '1746779616', '/login.php')

[XT SQL Error]