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', 'hvmok11cbn91hnet788cnqugi1', '18.97.14.82', '1745410352', '1745410352', '/shop_content.php/coID/7/content/Kontakt')

[XT SQL Error]