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', 'qohhi3t90qt325p5bgigv6mne2', '18.191.245.229', '1746959100', '1746959100', '/product_info.php/info/p6609_T-9-JH-Wasserl--scher.html')

[XT SQL Error]