1366 - Incorrect integer value: '' for column `mapshopatlogis`.`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', '9577dc7f5d0e069b9037e240b5b462cc', '216.73.216.3', '1767300515', '1767300515', '/product_info.php?info=p3400_Polen-Reliefkarte.html')

[XT SQL Error]