1366 - Incorrect integer value: '' for column `shop_db3`.`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', '7c471e31c049eeda7181243c83f70c4d', '3.129.13.201', '1714192089', '1714192089', '/product_info.php?info=p298_Bei-uns-in-Bayern.html&XTCsid=20bbdc77ade4d1698ba2b6b1a9e7f349')

[XT SQL Error]