1366 - Incorrect integer value: '' for column `hbl_shop`.`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', '7fp52sisftga0c081m7njpiul0', '3.15.189.95', '1746764170', '1746764170', '/index.php?cat=c61_Schaedlingsbekaempfung.html')

[XT SQL Error]