1366 - Incorrect integer value: '' for column `sql12320`.`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', '8c9c03175de91b473cce38b165933127', '3.83.188.254', '1585992523', '1585992523', '/shop/product_info.php/info/p81_Fruehtrachthonig.html')

[XT SQL Error]