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', '4q0q6k9j78jvfdi26022uc9in2', '216.73.216.80', '1761123919', '1761123919', '/product_info.php?info=p1782_Gazelle.html')

[XT SQL Error]