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', 'dlgb1h0he0m61o509s7v0m2lb0', '18.188.91.70', '1746787020', '1746787020', '/shop_content.php/coID/70/product/L--schdecken')

[XT SQL Error]