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', '9kin3skac4e1et30o4jnfc1v37', '3.145.108.231', '1746953160', '1746953160', '/product_info.php/info/p6429_ISO-7010-F-003-KNS--Feuerleiter.html')

[XT SQL Error]