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', '9sjjui2f3sv0rjc3g9i8amp5g7', '216.73.216.16', '1758196017', '1758196017', '/create_guest_account.php')

[XT SQL Error]