1366 - Incorrect integer value: '' for column `abtecsho_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', 'k8sutectgi4ir1pmvd04iielr5', '3.19.246.233', '1741832162', '1741832162', '/product_info.php/info/p6309_ISO-7010--E002-E006--KNS--Rettungsweg-rechts-abw--rts.html')

[XT SQL Error]