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', 'd3eokcifpmlpo5m64msvn6vr37', '3.148.211.202', '1746951923', '1746951923', '/product_info.php/info/p6925_ISO-7010--Verhalten-im-Brandfall.html')

[XT SQL Error]