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', '1ebab03973a6fcd0c8c2ccf12d300e01', '3.15.202.4', '1713439983', '1713439983', '/product_info.php?info=p298_Bei-uns-in-Bayern.html&XTCsid=1ac6c2897c9e1517fbc2b6cff40eabd3')

[XT SQL Error]