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', '91910srfisb2iv65gar10j09v4', '216.73.216.155', '1769706202', '1769706202', '/shop_content.php?coID=11')

[XT SQL Error]