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', 'jdai6504nuh32h5pvv1ru0ptb1', '3.133.117.5', '1746783190', '1746783190', '/product_info.php?info=p55_800727-Schlauch-und-Decke-fuer-Schubkarrenrad.html')

[XT SQL Error]