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', 'hrv724a1pu1havassergnid2u0', '18.226.164.95', '1741833191', '1741833191', '/shop_content.php/coID/13/content/Widerrufsrecht')

[XT SQL Error]