1366 - Incorrect integer value: '' for column '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', 'bb55e3801ef12ee16a04d2de990a0f49', '216.73.216.213', '1767340306', '1767340306', '/shop/product_info.php?info=p32_.html')

[XT SQL Error]